CN207947179U - A kind of electromagnet - Google Patents
A kind of electromagnet Download PDFInfo
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- CN207947179U CN207947179U CN201820263240.4U CN201820263240U CN207947179U CN 207947179 U CN207947179 U CN 207947179U CN 201820263240 U CN201820263240 U CN 201820263240U CN 207947179 U CN207947179 U CN 207947179U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000011162 core material Substances 0.000 description 77
- 230000004907 flux Effects 0.000 description 20
- 238000000034 method Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 230000002411 adverse Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004080 punching Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Abstract
The utility model provides a kind of electromagnet, including upper core (10), lower core (20) and electromagnetic coil (30), upper core (10) contains upper beam (11) and upper vertical arm (12), lower core (20) contains bottom end rail (21), first time vertical arm (22) and second time vertical arm (23), upper vertical arm (12) is between first time vertical arm (22) and second time vertical arm (23), electromagnetic coil (30) is sheathed on vertical arm (12) outside, when the electromagnet is in attracting state, there are gaps between the lower end and bottom end rail (21) of upper vertical arm (12), upper beam (11) is connect with first time vertical arm (22) and second time vertical arm (23).The electromagnet, which can reduce iron core off-state magnetic resistance and reduce, starts magnetic potential, solves the problems, such as that electromagnet off-state suction is small, closing course impact force is big.Achieve the purpose that increase core interior space availability ratio and cost-effective simultaneously.
Description
Technical field
The utility model is related to low voltage equipment field, a kind of particularly electromagnet.
Background technology
Currently, the operation principle of the electromagnet generally used in electrical apparatus industry is after coil is powered, coil current can produce
Magnetisation field and electromagnetic attraction make lower core attract upper core, and are acted with movable contact, and normally-closed contact disconnects, and normally opened contact is closed,
The two is linkage.When the coil is de-energized, electromagnetic attraction disappears, and upper core discharges under the action of release spring, and contact is made to answer
Original, normally opened contact disconnect, and normally-closed contact is closed.
Traditional E-shaped structure iron core (as shown in Figure 10), upper core vertical arm are arranged at coil top, are powered in coil
Incipient stage generates very big leakage magnetic flux, reduces magnetic field utilization rate.Mainly pass through the main flux between upper core and lower core end face
Generated suction (being commonly called as surface force).Fail to efficiently use leakage magnetic flux generation electromagnetic attraction, causes total electromagnetic attraction less than normal.
Traditional solenidal electromagnet can utilize upper core to erect leg and be deep into electromagnetic coil (as shown in figure 11), in coil
Although the incipient stage that is powered can utilize the effect of leakage magnetic flux, electromagnetic attraction (being commonly called as screwed pipe power) is generated.But pole-face there are one only,
It is smaller by suction (being commonly called as surface force) caused by the main flux between upper core and lower core end face, cause total electromagnetism to inhale
Power is less than normal.
Both the above structure causes iron core to need more startup magnetic potentials from off-state to inspire bigger electromagnetic force
It can complete the reliable closed action of iron core.However off-state switching attracting state does not need excessive power and maintains again.And switch
Between the upper and lower iron core of electromagnetic force drive that superfluous magnetic potential generates in the process, relative velocity increases between contact, closes in such cases
It is unfavorable to the low-voltage electrical apparatus of the longer electric life of the requirements such as contactor to close moment generation collision.
Utility model content
Electromagnetic attraction in order to solve the problems, such as existing electromagnet is less than normal.The utility model provides a kind of electromagnet, should
Electromagnet changes the shape of existing upper core and lower core, starts magnetic potential to reduce iron core off-state magnetic resistance and reduce, solves
The problem that electromagnet off-state suction is small, closing course impact force is big.Simultaneously reach increase core interior space availability ratio and
Cost-effective purpose.
Technical solution adopted by the utility model to solve its technical problems is：A kind of electromagnet, including upper core, lower iron
Core and electromagnetic coil, upper core contain upper beam and upper vertical arm, and the upper end of upper vertical arm is connect with upper beam, and lower core contains lower cross
Beam, first time vertical arm and second time vertical arm, the lower end of first time vertical arm and the lower end of second time vertical arm are connect with bottom end rail, on
Crossbeam is located at the top of bottom end rail, and between first time vertical arm and second time vertical arm, electromagnetic coil is sheathed on perpendicular upper vertical arm
Outside arm, between first time vertical arm and second time vertical arm, upper core can move up and down electromagnetic coil, when the electromagnet is in
There are gaps, upper beam to be connect with the upper end of first time vertical arm when attracting state, between the lower end and bottom end rail of upper vertical arm, or on
Crossbeam is connect with the upper end of second time vertical arm or upper beam connects with the upper end of first time vertical arm and the upper end of second time vertical arm
It connects.
Upper beam and bottom end rail are horizontal, and the distance at upper end to the upper beam both ends of upper vertical arm is equal, under first
Vertical arm and second time vertical arm are symmetrical arranged in the left and right sides of upper vertical arm, when the electromagnet be in attracting state, upper beam and
The upper end of first time vertical arm and the upper end of second time vertical arm are all connected with.
First time vertical arm and second time vertical arm mirror image each other are equipped with groove in the upper surface of bottom end rail, at the electromagnet
When attracting state, the lower end of upper vertical arm is located in groove, and there are gaps between the lower end of upper vertical arm and the lower surface of groove.
Groove is the straight slot opened up along the thickness direction of lower core, and the lower surface of groove is equipped with strip bulge, strip bulge
Width be less than groove width, when the electromagnet is in attracting state, the lower end of upper vertical arm and the upper surface of strip bulge
Between there are gap, the width of strip bulge is 0.9 times to 1.1 times of upper vertical arm width.
The width of electromagnetic coil is more than the width of groove, and the width of electromagnetic coil is less than first time vertical arm and second time vertical arm
The distance between, electromagnetic coil is located at the top of groove, and it is 0.9 times to 1.1 times that the width of upper vertical arm, which is first time vertical arm width,.
Equipped with extended structure in first protruded towards upper vertical arm, the upper end of second time vertical arm is set for the upper end of first time vertical arm
Have towards upper vertical arm protrude second in extended structure, in first in extended structure and second extended structure in the left and right of upper vertical arm
Both sides are symmetrical arranged, extended structure mirror image each other in extended structure and second in first.
The distance between extended structure is more than the width of electromagnetic coil in extended structure and second in first.
Groove is equipped in the upper surface of bottom end rail, when the electromagnet is in attracting state, the lower end of upper vertical arm is positioned at recessed
In slot, there are gap between the lower end of upper vertical arm and the lower surface of groove, the distance between extended structure and upper vertical arm in first
More than or equal to the gap.
The both ends of upper beam are equipped with lower protrusion, are equipped in the upper end of first time vertical arm and the upper end of second time vertical arm
Short-circuited conducting sleeve, the upper end outside of first time vertical arm and the upper end of second time vertical arm are equipped with a v notch v, are inhaled when the electromagnet is in
When conjunction state, the upper end of the lower protrusion at upper beam both ends and first time vertical arm and second time vertical arm are correspondingly connected with.
Upper beam, upper vertical arm and lower core are made of steel disc stacking riveting, and the lower surface of upper vertical arm is equipped with dovetail groove, should
Dovetail groove opens up that direction is identical as the thickness direction of upper core, and the upper end of upper vertical arm is in isosceles trapezoidal structure, upper vertical arm it is upper
End matches grafting with the dovetail groove of upper vertical arm.
The utility model has the beneficial effects that：The electromagnet changes the shape of existing upper core and lower core, by subtracting
Magnetic loop magnetic resistance when small iron core off-state improves electromagnetic attraction when off-state.It is opened in addition, this structure can be reduced effectively
Dynamic magnetic potential, while the comparable setting of width of the upper vertical arm of upper core and first time vertical arm and second time vertical arm can limit magnet and face
Magnetic flux in electromagnetic circuit when nearly closure, effectively limitation electromagnetic attraction is excessive, and these two aspects factor can reduce in attracting process
Lower core speed of related movement, to mitigate the collision adverse effect for being closed moment generation；This structure is upper perpendicular by being rationally arranged
The width of arm is obtaining identical magnetic potential, can reduce copper material use.In addition, the assembly method of the utility model is polynary, root
Assembly method is selected according to actual conditions, improves efficiency of assembling.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
Fig. 1 is the schematic diagram that electromagnet described in the utility model is free of electromagnetic coil in embodiment 1.
Fig. 2 is the schematic diagram of electromagnet described in the utility model in embodiment 1.
Fig. 3 is the right angle setting schematic diagram of electromagnet described in the utility model in embodiment 1.
Fig. 4 is that electromagnet described in the utility model is horizontally mounted schematic diagram in embodiment 1.
Fig. 5 is the schematic diagram of electromagnet described in the utility model in example 2.
Fig. 6 is the schematic diagram of electromagnet described in the utility model in embodiment 3.
Fig. 7 is the schematic diagram of electromagnet described in the utility model in example 4.
Fig. 8 is the schematic diagram of the electromagnet described in the utility model in embodiment 5.
Fig. 9 is the schematic diagram of the electromagnet described in the utility model in embodiment 6.
Figure 10 is the schematic diagram of existing double E shapes iron core electromagnet.
Figure 11 is the schematic diagram of existing helix tube type iron core electromagnet.
Figure 12 is schematic diagram of the upper core of electromagnet described in the utility model in decomposing state.
Figure 13 is schematic diagram of the upper core of electromagnet described in the utility model in assembled state.
10, upper core；20, lower core；30, electromagnetic coil；
11, upper beam；12, upper vertical arm；13, lower protrusion；
21, bottom end rail；22, first time vertical arm；23, second time vertical arm；24, extended structure in first；25, the second interior extension
Structure；26, groove；27, strip bulge；28, short-circuited conducting sleeve.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of electromagnet, including upper core 10, lower core 20 and electromagnetic coil 30, upper core 10 contain upper beam 11 and upper
The upper end of vertical arm 12, upper vertical arm 12 is connect with upper beam 11, and lower core 20 is containing under bottom end rail 21, first time vertical arm 22 and second
Vertical arm 23, the lower end of first time vertical arm 22 and the lower end of second time vertical arm 23 are connect with bottom end rail 21, under upper beam 11 is located at
The top of crossbeam 21, between first time vertical arm 22 and second time vertical arm 23, electromagnetic coil 30 is sheathed on perpendicular upper vertical arm 12
Outside arm 12, electromagnetic coil 30 between first time vertical arm 22 and second time vertical arm 23, upper core 10 can vertically on
Lower movement, when the electromagnet is in attracting state, there are gap, upper beams 11 between the lower end and bottom end rail 21 of upper vertical arm 12
It is connect with the upper end of first time vertical arm 22 or upper beam 11 is connect with the upper end of second time vertical arm 23 or upper beam 11 and first
The upper end of lower vertical arm 22 and the upper end of second time vertical arm 23 are all connected with.
Lower core 20 and electromagnetic coil 30 are relatively motionless, and when electromagnetic coil 30 is powered, upper core 10 is in electromagnetic coil
It is moved down under 30 magneticactions generated, so that upper core 10 is contacted with lower core 20, the electromagnet is in attracting state at this time.
When electromagnetic coil 30 powers off, the magnetic field that electromagnetic coil 30 generates disappears, and upper core 10 loses magnetic force and moves up reset, makes
Upper core 10 is detached with lower core 20, and the electromagnet is off at this time.
Embodiment 1
The present embodiment is the further refinement to above-mentioned electromagnet.Electromagnet in the present embodiment includes not only above-mentioned skill
Art feature, the electromagnet further include following technical characteristic：
In the present embodiment, upper beam 11 and bottom end rail 21 are horizontal, upper vertical arm 12, first time vertical arm 22 and
Two times vertical arm 23 is upright state, and the distance at upper end to 11 both ends of upper beam of upper vertical arm 12 is equal, first time vertical arm 22
Lower end and the lower end of second time vertical arm 23 and the both ends of bottom end rail 21 are correspondingly connected with, and first time vertical arm 22 and second time vertical arm 23 exist
The left and right sides of upper vertical arm 12 is symmetrical arranged, when the electromagnet is in attracting state, upper beam 11 and first time vertical arm 22
Upper end and the upper end of second time vertical arm 23 are all connected with, as shown in Figure 1.
In the present embodiment, first time vertical arm 22 and second time vertical arm 23 mirror image each other is set in the upper surface of bottom end rail 21
Fluted 26, groove 26 is the straight slot opened up along the thickness direction of lower core 20, upper perpendicular when the electromagnet is in attracting state
The lower end of arm 12 is located in groove 26, and there are gaps between the lower end and the lower surface of groove 26 of upper vertical arm 12.
In the present embodiment, strip bulge 27, the lower end of upper vertical arm 12 and item are also provided in the lower surface of groove 26
Shape protrusion 27 is corresponding, and the width of strip bulge 27 is less than the width of groove 26, to make strip bulge 27 each side
A little groove is formd, when the electromagnet is in attracting state, the upper surface of the lower end and strip bulge 27 of upper vertical arm 12
Between there are gaps, as shown in Figure 1, Figure 2, Figure 3, Figure 4.
In the present embodiment, the width of electromagnetic coil 30 is more than the width of groove 26, and the width of electromagnetic coil 30 is less than the
Once the distance between vertical arm 22 and second time vertical arm 23, electromagnetic coil 30 are located at the top of groove 26, as shown in Figure 2.It is upper perpendicular
The width of arm 12, first time vertical arm 22 width and second time vertical arm 23 equivalent width, be 11mm.The depth of groove 26 is
The height of 4mm, strip bulge 27 are 1mm~2mm.Above-mentioned gap can be 0.1mm.
The electromagnet may be used vertically-mounted (as shown in Figure 3) or be horizontally mounted (such as Fig. 4 institutes on mounting means
Show), assembly method is selected according to actual conditions, it is polynary to be allowed to assembly method, improves efficiency of assembling.With traditional helix tube type electromagnetism
Iron side installation electromagnetic coil is compared, and efficiently uses magnet inner space, structure is compacter, effectively improves efficiency of assembling.
Absolute positional relation is used for the ease of understanding and describing, in the utility model to be stated, orientation therein
Word "upper" indicates that the upper side direction of Fig. 2, "lower" indicate that the downside direction of Fig. 2, " left side " indicate that the left direction of Fig. 2, " right side " indicate
The right direction of Fig. 2, width are the size on the left and right directions of Fig. 2, are highly the ruler in the upper and lower directions of Fig. 2 with depth
Very little, thickness is the size on the direction of the faces Fig. 2.The utility model has used the observation for the reader for reading the utility model to regard
Angle is described, but the above-mentioned noun of locality cannot understand or be not construed as the restriction to scope of protection of the utility model.
In addition, the both ends of upper beam 11 are equipped with lower protrusion 13, the upper end of first time vertical arm 22 and second time vertical arm 23
Upper end in be equipped with short-circuited conducting sleeve 28, it is scarce that on the outside of the upper end of the first time vertical arm 22 and upper end of second time vertical arm 23 is equipped with bar shaped
Mouthful, when the electromagnet is in attracting state, the upper end and two of the lower protrusion 13 at 11 both ends of upper beam and first time vertical arm 22
The upper end of a second time vertical arm 23 connects one to one.Short-circuited conducting sleeve 28 is the prior art, and the utility model is no longer discussed in detail.
Embodiment 2
The present embodiment is a kind of improvement to embodiment 1.
In the present embodiment, the upper end of first time vertical arm 22 is equipped with extended structure in first protruded towards upper vertical arm 12
24, the upper end of second time vertical arm 23 be equipped with towards upper vertical arm 12 protrude second in extended structure 25, extended structure 24 in first
With second in extended structure 25 the left and right sides of upper vertical arm 12 be symmetrical arranged, in first extended structure 24 with second in extend knot
The mirror image each other of structure 25, as shown in Figure 5.
In the present embodiment, the distance of extended structure 25 to upper vertical arm 12 is equal in extended structure 24 and second in first,
The distance between extended structure 24 and upper vertical arm 12 are always not less than upper vertical arm 12 with groove 26 in strip bulge 27 in first
The distance between upper surface.The distance between extended structure 24 and upper vertical arm 12 are greater than or equal to the gap in i.e. first.
In the present embodiment, in first extended structure 24 be cube shaped or first in extended structure 24 or etc.
The other shapes such as the trapezoidal, semi-cylindrical of waist, the thickness of extended structure 24 can select the thickness equal to first time vertical arm 22 in first
Spend identical, width of the distance between the extended structure 25 more than electromagnetic coil 30 in extended structure 24 and second in first.
In the present embodiment, the width of strip bulge 27 can be 0.9 times to 1.1 times of 12 width of upper vertical arm.Upper vertical arm
12 width can be that first time 22 width of vertical arm is 0.9 times to 1.1 times.Remaining technical characteristic in the present embodiment can be with reality
Apply identical in example 1, in order to save length, the utility model is no longer discussed in detail.
Embodiment 3
The present embodiment is a kind of improvement to embodiment 2.
In the present embodiment, it is 1.4 times of upper vertical arm 12 in embodiment 1 or embodiment 2 that the width of upper vertical arm 12, which increases, such as
Shown in Fig. 6.In addition, the upper surface of upper beam 11 is free of fluted 26, but strip bulge 27 is contained in the upper surface of upper beam 11, on
The lower end of vertical arm 12 is corresponding with strip bulge 27.When the electromagnet is in attracting state, the lower end of upper vertical arm 12 and lower cross
There are gaps between the strip bulge 27 of beam 21.Remaining technical characteristic in the present embodiment can be identical as in embodiment 2, is
Saving length, the utility model are no longer discussed in detail.
Embodiment 4
The present embodiment is a kind of improvement to embodiment 2.
In the present embodiment, the electromagnet, which is free of, extends knot in extended structure 24 and second in fluted 26, first
Structure 25.But strip bulge 27 is contained in the upper surface of upper beam 11, and the lower end of upper vertical arm 12 is corresponding with strip bulge 27, such as Fig. 7
It is shown.When the electromagnet is in attracting state, between existing between the lower end of upper vertical arm 12 and the strip bulge 27 of bottom end rail 21
Gap.
Remaining technical characteristic in the present embodiment can be identical as in embodiment 2, in order to save length, the utility model
No longer it is discussed in detail.
Embodiment 5
The present embodiment is a kind of improvement to embodiment 2.
In the present embodiment, the depth of groove 26 is the 1/3 of first time vertical arm 22 (second time vertical arm 23) height, such as Fig. 8
It is shown.
Remaining technical characteristic in the present embodiment can be identical as in embodiment 2, in order to save length, the utility model
No longer it is discussed in detail.
Embodiment 6
The present embodiment is a kind of improvement to embodiment 2.
In the present embodiment, the height of upper vertical arm 12 becomes smaller, and the lower end and bar shaped in groove 26 to make upper vertical arm 12 are convex
Rise 27 upper surface between there are the gaps of 3mm, as shown in Figure 9.
Remaining technical characteristic in the present embodiment can be identical as in embodiment 2, in order to save length, the utility model
No longer it is discussed in detail.
As above-mentioned 6 embodiments in the technical solution that can select to use, the depth bounds of groove 26 can select
The depth of 1mm~10mm or groove 26 is not more than the 1/4 of first time vertical arm 22 (second time vertical arm 23) height.Upper vertical arm 12
Gap between the upper surface of groove 26 is 0.1mm~1mm.Or between upper vertical arm 12 and the upper surface of strip bulge 27 between
Gap is 0.1mm~1mm.
It is made in addition, riveting can be laminated by steel disc in upper beam 11, upper vertical arm 12 and lower core 20, such as Figure 12 and Figure 13
Shown, the lower surface of upper vertical arm 12 is equipped with dovetail groove, the dovetail groove to open up direction identical as the thickness direction of upper core 10, on
The upper end of vertical arm 12 is in isosceles trapezoidal structure, and the upper end of upper vertical arm 12 matches plugged and fixed with the dovetail groove of upper vertical arm 12.
The course of work of electromagnet described in the utility model is described below.
When the electromagnet is in off-state, upper vertical arm 12 is deep into electromagnetic coil 30, using the effect of leakage magnetic flux, together
Sample generates electromagnetic attraction (being commonly called as screwed pipe power).The top of first time vertical arm 22 and second time vertical arm 23 is respectively arranged with inwardly projecting
First in extended structure 25 in extended structure 24 and second, extended structure 25 reduces in extended structure 24 and second in first
First time vertical arm 22 and the distance between second time vertical arm 23 and upper vertical arm 12, to reduce upper vertical arm 12 and first time vertical arm
22 and second time 23 formed magnetic loop of vertical arm magnetic resistance.After adding this groove 26, excellent magnetic flux distribution, in reduction vertical arm 12 with
Magnetic loop magnetic resistance between bottom end rail 21, reduce leakage field adverse effect (same groove structure be also reduce magnetic loop on vertical arm
The distance between 12 and bottom end rail 21 reduce leakage field to reduce magnetic resistance).So as to more make full use of the effect of leakage magnetic flux,
I.e. smaller startup magnetic potential can generate enough electromagnetic attractions.Due to smaller capable of being used to start magnetic potential when off-state,
Movement velocity in iron core closing course is unlikely to too fast.To alleviate because being closed instant shock to low tensions such as contactors
The adverse effect of device electric life.
The width of upper vertical arm 12 is suitable with first time vertical arm 22 and the width of second time vertical arm 23 or the width of upper vertical arm 12
Degree is 0.9 times -1.1 times of first time 22 width of vertical arm.This structure design can limit magnet by 12 structure of upper vertical arm and close on
Magnetic flux in electromagnetic circuit when closure so that during attracting state or under over-voltage condition, effectively limitation electromagnetic attraction is excessive,
The energy that upper and lower iron core is closed instant shock also can be effectively reduced in this way.This structure can set the internal diameter of electromagnetic coil simultaneously
Set smaller.Identical magnetic potential is obtained by adjusting enameled wire line footpath, the number of turns, electromagnetic coil can be made to reduce copper consumption.
When the electromagnet is in attracting state, the main flux between one side upper core 10 and the end face of lower core 20 is produced
Raw suction (being commonly called as surface force)；The upper vertical arm 12 of another aspect upper core 10 is inserted into the groove 26 of 20 bottom of lower core setting
It is interior, while being respectively arranged with extended structure 24 in first with first time vertical arm 22 of lower core both sides and second time 23 top of vertical arm
With second in extended structure 25 so that magnetic flux (main flux) is more vertical or near vertical to be surrounded section by short-circuited conducting sleeve 28
Face reduces magnetic resistance in closed magnetic circuit, utmostly utilizes the effect simulating, verifying of leakage magnetic flux, can effectively increase attracting state
Retentivity.When the depth of groove 26 is more than the 1/4 of first time vertical arm 22 (or second time vertical arm 23) height, magnetic flux can be influenced and hung down
Straight through the surrounded section of short-circuited conducting sleeve, electromagnetic attraction is caused to reduce
The bottom gaps setting 0.1mm~1mm of the upper vertical arm 12 of upper core 10 and groove 36.This structure can guarantee that coil is disconnected
When electric, after electromagnetic attraction disappears, ensure that upper core normally discharges, upper core 10 is avoided to be adsorbed onto on lower core 20 (according to previous
Experience, iron core pole-face finish is higher, and gapless is easily absorbing together.It is adsorption capacity when reducing release that this gap, which is arranged).
When the gap of the upper vertical arm 12 of upper core 10 and 26 bottom of groove is more than 1mm, magnetic resistance can significantly increase herein, and iron core keeps shape
State electromagnetic attraction is obviously reduced.
The electromagnetic coil 30 of electromagnet is set to 20 inside of lower core in the utility model, while being sleeved on the upper of upper core 10
12 outside of vertical arm.Extended structure 25 is always not less than upper core 10 with 12 gap of upper vertical arm in extended structure 24 and second in first
Upper vertical arm 12 at a distance from the bottom of the groove 26 of lower core 20.This structure allows electromagnetic coil 30 to be perpendicular to lower iron
Core end face is installed from the top down, while from will not be interfered when being installed perpendicular to lower core vertical arm side.I.e. there are two directions
Coil installation is carried out, it is polynary to be allowed to assembly method, selects assembly method according to actual conditions, efficiency of assembling can be improved.With tradition
Solenoid electromagnet side installation electromagnetic coil compare, efficiently use magnet inner space, structure is compacter, effectively improves
Efficiency of assembling.
Electromagnet described in the utility model is equipped with circuit, 30 both ends of electromagnetic coil is applied to, for controlling the electromagnetism
The upper and lower directions of iron upper core 10 moves.Upper core 10 is connected to moving contact, drives moving contact to move up and down by upper core 10.
The making of upper core 10 can use seperated riveted construction, i.e., above vertical arm 12 can be fixed on one by way of riveted in upper beam 11
It rises, punching shaping scrap rate can be reduced, by improving punching process arrangement mode to reach the mesh for saving iron core manufacturing cost
's.
The performance of electromagnet described in the utility model will be introduced in a manner of experiment below.
The electromagnet of comparison includes the electromagnet described in embodiment 1 to 6, further includes electromagnet (such as figure of double E shape iron cores
Shown in 10) and helix tube type iron core electromagnet (as shown in figure 11).Total volume that double E shapes iron cores wherein shown in Fig. 10 show and on
Lower core both sides vertical arm width dimensions are consistent in embodiment 1, are 11mm, and intermediate vertical arm width is 1.4 in embodiment 1
Times.The total volume of helix tube type iron core and lower core vertical arm width dimensions shown in wherein Figure 11 are consistent with embodiment 1, are
11mm.Upper core vertical arm width is 1.4 times in embodiment one.
Electromagnetic attraction simulation analysis is carried out respectively to above several different embodiments, double E shapes iron cores and helix tube type iron core, it is right
Than the suction situation under different operating air gap.
The overall volume all same of comparison scheme is set：Length × width × height is：64mm×20mm×50mm.
The emulation data comparison of table 1, above-described embodiment 1-6, double E shapes iron cores and solenoid electromagnet
It can be seen that according to simulation analysis result in table 1：
Electromagnet in off-state (above-mentioned gap be 9,10,11mm), suction peak compares：3 ≈ embodiments 2 of embodiment
The bis- E shapes iron core ＞ helix tube type iron cores of 1 ＞ embodiments of ＞ embodiments, 4 ＞.
In conjunction with these types of example structure difference, obtain to draw a conclusion：Upper vertical arm 12 is deep into electromagnetic coil in embodiment 1
In 30, using the effect of leakage magnetic flux, electromagnetic attraction (being commonly called as screwed pipe power) is equally generated.Lower core bottom setting fluted 26, it is deep
Degree is 4mm.After increasing this groove 26, excellent magnetic flux distribution is obtained, reduces the adverse effect of leakage field, vertical arm 12 is under in reduction
Magnetic loop magnetic resistance between crossbeam 21.So that it is much larger than double E shapes iron cores and helix tube type iron core in the electromagnetic attraction of off-state.
Simultaneously electromagnetic attraction be not provided with than lower core bottom fluted 26 embodiment 4 it is big by 10%.The of the lower core of embodiment 2
Once vertical arm 22 and second time 23 top of vertical arm are respectively arranged in inside first extended structure in extended structure 24 and second
25, the magnetic resistance of vertical arm 12 and first time vertical arm 22 and second time 23 formed magnetic loop of vertical arm in reduction.So that when off-state
Electromagnetic attraction promotes amplitude 10% or so than 1 bigger of embodiment.The difference of embodiment 3 and embodiment 2 is that upper vertical arm 12 is wide simultaneously
Degree increase is 1.4 times in embodiment 1, and the force value of off-state is almost without difference from simulation result.That is off-state
The width of the upper vertical arm of Shi Zengjia 12 does not play the role of reducing electromagnetic circuit magnetic resistance.The structure to play an important role is lower core
Extended structure 25 in extended structure 24 and second in bottom setting fluted 26, first.Embodiment 2, which is the utility model, to be protected
A kind of more excellent structure in embodiment.
In attracting state (gap 0.03mm), suction peak compares iron core：Double 3 ＞ of E shapes iron core ＞ embodiments are implemented
3 ≈ embodiments of example, 1 ≈ embodiments, 4 ＞ helix tube type iron cores.
In conjunction with these types of example structure difference, obtain to draw a conclusion：The upper vertical arm 12 of double E shaped iron cores and embodiment 3 is wide
Degree is 1.4 times of embodiment 1,2,4, and the electromagnetic attraction peak value of hold mode is caused to significantly improve about 20%, vertical arm in verification
12 and first time vertical arm 22 and second time vertical arm 23 the comparable structure design of width, can pass through 12 structure of upper vertical arm limit magnetic
Magnetic flux in electromagnetic circuit when iron closes on closure so that during attracting state or under over-voltage condition, effectively limit electromagnetism and inhale
Power is excessive.Double E shaped iron cores and 3 such case of embodiment result in the electromagnetic force generated in handoff procedure drive upper and lower iron core it
Between, between contact relative velocity increase, in such cases be closed moment generate collision to the longer electric life of the requirements such as contactor
Low-voltage electrical apparatus be unfavorable.Although helix tube type iron core attracting state electromagnetic attraction smaller, force value less than normal, in certain uses
Under the conditions of the effect of cored release counter-force when be susceptible to vibrating noise phenomenon.
It can be seen that three in iron core off-state by the simulation parameter result of comparative example 2 and embodiment 5,6
Electromagnetic attraction be not much different；But in iron core attracting state, the electromagnetic attraction of embodiment 5,6 is much smaller than embodiment 2, real at this time
The groove 26 of example 5 is applied, when depth is the 1/3 of first time vertical arm 22 (second time vertical arm 23) height, i.e. the depth of groove 26 is more than
First time vertical arm 22 (second time vertical arm 23) height 1/4 when, magnetic flux can be influenced perpendicular through the surrounded section of short-circuited conducting sleeve, caused
Electromagnetic attraction reduces.The upper vertical arm 12 of embodiment 6 is 3mm with the gap of 26 bottom of groove, i.e., when gap is more than 1mm, electromagnetism returns
Road magnetic resistance can significantly increase, and iron core hold mode electromagnetic attraction is obviously reduced.
New electromagnet in the utility model reduces by reducing magnetic loop magnetic resistance when iron core off-state and starts magnetic
Gesture can also obtain same electromagnetic attraction, and can reduce iron core speed of related movement above and below in attracting process, be closed to mitigate
The collision that moment generates is closed to adversely affect；By the way that 12 width of upper vertical arm is rationally arranged, excellent magnetic can be obtained in off-state
Reduction of fractions to a common denominator cloth reduces the adverse effect of leakage field, obtains excellent electromagnetic attraction；It is being closed or close to attracting state so that magnetic flux is more
More is vertical or near vertical by the surrounded section of short-circuited conducting sleeve, obtains excellent electromagnetism and keeps suction；Assembly method is more simultaneously
Member, realizes vertically-mounted and is horizontally mounted, and selects assembly method according to actual conditions, improves efficiency of assembling.
I.e. the utility model embodiment can provide enough electromagnetism compared to conventional electromagnets scheme in iron core off-state
Suction ensures that upper core can stablize actuation, while during closing on attracting state, electromagnetic attraction is again than traditional E types electromagnet
Small and enough satisfactions are closed needs, can effectively reduce the energy that upper and lower iron core is closed instant shock, improve service life.
In addition, the difference of embodiment 2 and embodiment 3 is：12 width of vertical arm increases as 1.4 in embodiment 1 in embodiment 3
Times.Smaller can be arranged in the internal diameter of electromagnetic coil 30 by the structure of embodiment 2.It is real when off-state from the point of view of simulation result
The electromagnetic attraction for applying example 2 and embodiment 3 is not much different, and embodiment is respectively set according to the different in width of vertical arm in the two 12 at this time
2 and embodiment 3 electromagnetic coil internal diameter.Size ratio embodiment 3 in the electromagnetic coil internal diameter width direction of embodiment 2 reduces
25%.Electromagnetic coil internal diameter reduces so that reduces per circle copper wire length when coiling, while to ensure that every circle copper wire resistance value is kept not
Becoming can be realized again by reducing line footpath.To realize that reducing copper consumption can make electromagnetic coil obtain identical magnetomotive force simultaneously again.
Comparison the utility model applies a 1-6, double E shaped iron cores and solenoid electromagnet, and the utility model is applied in Fig. 3 and Fig. 4
1 core structure of example electromagnetic coil to be perpendicular to lower core end face to install from the top down, while from perpendicular to lower core
Vertical arm side will not interfere when installing.Improve efficiency of assembling.The bis- E core structures of Figure 10 can only be from perpendicular to lower core end face
From the top down installation and Figure 11 it is traditional solenoid electromagnet side installation electromagnetic coil compare, the utility model embodiment has two
A direction carries out coil installation, and assembly method is polynary, selects assembly method according to actual conditions, can effectively improve efficiency of assembling.
It is it can be seen that the making of upper core 10 can use split structure in the embodiment of such as Figure 12 and Figure 13, i.e., upper perpendicular
Arm 12 can be fixed together by way of riveted with upper beam 11, can reduce iron core by improving punching process arrangement mode
Punching shaping scrap rate, to achieve the purpose that save iron core manufacturing cost.By taking the upper core size in embodiment 2 as an example, adopt
With seperated riveted construction than improving 15% using the core material utilization rate of overall structure punching.
The above, only specific embodiment of the utility model cannot limit the range that utility model is implemented, institute with it
With the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection domain and modification, should all still fall within
The scope that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical solution
Between, between technical solution and technical solution use can be freely combined.
Claims (10)
1. a kind of electromagnet, which is characterized in that the electromagnet includes upper core (10), lower core (20) and electromagnetic coil (30),
Upper core (10) contains upper beam (11) and upper vertical arm (12), and the upper end of upper vertical arm (12) is connect with upper beam (11), lower core
(20) contain bottom end rail (21), first time vertical arm (22) and second time vertical arm (23), the lower end and second of first time vertical arm (22)
The lower end of lower vertical arm (23) is connect with bottom end rail (21), and upper beam (11) is located at the top of bottom end rail (21), upper vertical arm (12)
Between first time vertical arm (22) and second time vertical arm (23), electromagnetic coil (30) is sheathed on vertical arm (12) outside, electromagnetic wire
(30) are enclosed between first time vertical arm (22) and second time vertical arm (23), upper core (10) can move up and down, when the electromagnetism
When iron is in attracting state, there are gap between the lower end and bottom end rail (21) of upper vertical arm (12), under upper beam (11) and first
The upper end of vertical arm (22) connects or upper beam (11) is connect with the upper end of second time vertical arm (23) or upper beam (11) and first
The upper end of lower vertical arm (22) and the upper end of second time vertical arm (23) are all connected with.
2. electromagnet according to claim 1, which is characterized in that upper beam (11) and bottom end rail (21) are horizontal
The distance of state, upper end to upper beam (11) both ends of upper vertical arm (12) is equal, first time vertical arm (22) and second time vertical arm (23)
It is symmetrical arranged in the left and right sides of upper vertical arm (12), when the electromagnet is in attracting state, upper beam (11) is perpendicular with first time
The upper end of arm (22) and the upper end of second time vertical arm (23) are all connected with.
3. electromagnet according to claim 1, which is characterized in that first time vertical arm (22) and second time vertical arm (23) are each other
Mirror image is equipped with groove (26) in the upper surface of bottom end rail (21), when the electromagnet is in attracting state, under upper vertical arm (12)
End is located in groove (26), and there are gaps between the lower end and the lower surface of groove (26) of upper vertical arm (12).
4. electromagnet according to claim 3, which is characterized in that groove (26) is opened for the thickness direction along lower core (20)
If straight slot, the lower surface of groove (26) is equipped with strip bulge (27), and the width of strip bulge (27) is less than the width of groove (26)
Degree, when the electromagnet is in attracting state, between existing between the lower end and the upper surface of strip bulge (27) of upper vertical arm (12)
Gap, the width of strip bulge (27) are 0.9 times to 1.1 times of upper vertical arm (12) width.
5. electromagnet according to claim 3, which is characterized in that the width of electromagnetic coil (30) is more than the width of groove (26)
The width of degree, electromagnetic coil (30) is less than the distance between first time vertical arm (22) and second time vertical arm (23), electromagnetic coil
(30) it is located at the top of groove (26), it is 0.9 times to 1.1 times that the width of upper vertical arm (12), which is first time vertical arm (22) width,.
6. electromagnet according to claim 1, which is characterized in that the upper end of first time vertical arm (22) is equipped with towards upper vertical arm
(12) extended structure (24) in the first of protrusion, the upper end of second time vertical arm (23) are equipped with protruded towards upper vertical arm (12) second
Interior extended structure (25), extended structure (25) is right in the left and right sides of upper vertical arm (12) in extended structure (24) and second in first
Claim setting, extended structure (25) mirror image each other in extended structure (24) and second in first.
7. electromagnet according to claim 6, which is characterized in that extended structure in extended structure (24) and second in first
The distance between (25) it is more than the width of electromagnetic coil (30).
8. electromagnet according to claim 7, which is characterized in that groove (26) is equipped in the upper surface of bottom end rail (21),
When the electromagnet is in attracting state, the lower end of upper vertical arm (12) is located in groove (26), the lower end of upper vertical arm (12) with it is recessed
There are gap between the lower surface of slot (26), the distance between extended structure (24) and upper vertical arm (12) are greater than or equal in first
The gap.
9. electromagnet according to claim 1, which is characterized in that the both ends of upper beam (11) are equipped with lower protrusion
(13), short-circuited conducting sleeve (28), first time vertical arm are equipped in the upper end of first time vertical arm (22) and the upper end of second time vertical arm (23)
(22) on the outside of the upper end and upper end of second time vertical arm (23) is equipped with a v notch v, when the electromagnet is in attracting state,
The lower protrusion (13) at upper beam (11) both ends and first time upper end of vertical arm (22) and being correspondingly connected with for second time vertical arm (23).
10. electromagnet according to claim 1, which is characterized in that upper beam (11), upper vertical arm (12) and lower core (20)
It is made of steel disc stacking riveting, the lower surface of upper vertical arm (12) is equipped with dovetail groove, which opens up direction and upper core
(10) thickness direction is identical, and the upper end of upper vertical arm (12) is in isosceles trapezoidal structure, upper end and the upper vertical arm of upper vertical arm (12)
(12) the dovetail groove matches grafting.
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| CN201820263240.4U CN207947179U (en) | 2018-02-23 | 2018-02-23 | A kind of electromagnet |
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| CN201820263240.4U CN207947179U (en) | 2018-02-23 | 2018-02-23 | A kind of electromagnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242348A (en) * | 2018-02-23 | 2018-07-03 | 首瑞（天津）电气设备有限公司 | A kind of electromagnet |
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2018
- 2018-02-23 CN CN201820263240.4U patent/CN207947179U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242348A (en) * | 2018-02-23 | 2018-07-03 | 首瑞（天津）电气设备有限公司 | A kind of electromagnet |
| CN108242348B (en) * | 2018-02-23 | 2024-10-11 | 首瑞（天津）电气设备有限公司 | Electromagnet |
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