CN203223501U - Electromagnetic connection device - Google Patents
Electromagnetic connection device Download PDFInfo
- Publication number
- CN203223501U CN203223501U CN 201320196717 CN201320196717U CN203223501U CN 203223501 U CN203223501 U CN 203223501U CN 201320196717 CN201320196717 CN 201320196717 CN 201320196717 U CN201320196717 U CN 201320196717U CN 203223501 U CN203223501 U CN 203223501U
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- armature
- magnetic flux
- relative
- generating unit
- force generating
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Abstract
The utility model relates to an electromagnetic connection device. An electromagnetic force generating portion (8), a rotor portion (5), an armature (3) and a drum (1) are coaxially installed in sequence from one end to the other end in the axial direction of the electromagnetic connection device. The electromagnetic force generating portion (8) comprises a magnetic yoke (9) and a coil (10). A disk-shaped opposite portion (12) opposite to the armature (3) in the axial direction is installed in the rotor portion (5), a spring (4) used for separating the rotor portion (5) from the armature (3) is installed between the opposite portion (12) and the disk-shaped armature in a clamped mode, the opposite portion (12) is provided with a magnetic flux limiting portion (17), a part of the opposite portion (12) is thinned in the axial direction to form the magnetic flux limiting portion (17), the armature (3) is provided with an armature magnetic flux limiting portion (18), and a part of the armature (3) is thinned in the axial direction to form the armature magnetic flux limiting portion (18). A gap is formed between the magnetic flux limiting portion of the opposite portion and the armature magnetic flux limiting portion in the radial direction.
Description
Technical field
The utility model relates to a kind of electromagnetic connector.
Background technique
A kind of magnetic clutch is disclosed in TOHKEMY 2008-309265 communiques.As shown in Figure 1, this magnetic clutch 1 comprises electromagnetic force generating unit 2, rotor 3 and armature 4, and this electromagnetic force generating unit 2 comprises yoke 2 and the winding coil 8 on yoke 2.Rotor 3 is radially extended the relative portion 12 that forms and is extended the ring portion cylindraceous 13 that forms to the left from the outer periphery of relative portion 12 by the right-hand member of hub portion 14 and loose boss portion 14 and constitutes, hub portion 14 inserts the central through bore 2a of electromagnetic force generating unit 2 from the right side, thereby make electromagnetic force generating unit 2 at least a portion enter into the space between described ring portion 13 and the hub portion 14, be provided with several long through-holes 19 as rotor flux blocking-up portion that extend along circumferentially in relative portion 12, with three long through-holes 20, wherein several magnetic flux blocking-up portions 19 are arranged on the less concentric circle centered by the central axis of rotor 3 of diameter, and these magnetic flux blocking-up portions 19 are distributed on this concentric circle.Several magnetic flux blocking-up portions 20 are arranged on the bigger concentric circle centered by the central axis of rotor 3 of diameter, and these magnetic flux blocking-up portions 20 are distributed on this concentric circle.Be provided with discoid armature 4 on the right side of rotor 3, this armature 4 is relative in the axial direction with relative portion 12.Be provided with three 29, three long through-holes 29 of long through-hole as magnetic flux blocking-up portion at armature 4 and be arranged on the concentric circle centered by the central axis of rotor 3, and be separated with the compartment of terrain mutually and be distributed on this concentric circle.Long through-hole 29 is diametrically between long through-hole 19 and long through-hole 20.
To coil 8 energising the time, electromagnetic force generating unit 2 produces electromagnetic forces, armature 4 is attracted to move on the rotor 3 and contacts with rotor 3, rely between rotor 3 and the armature 4 frictional force and future the ultromotivity source power be delivered to slave end by electromagnetic connector 1.
Electromagnetic force generating unit 2 is fixed.Rotor 3 is coaxial by having the rolling bearing of lubricant oil or sliding bearing (not shown) that immersion has lubricant oil to be supported to the center hole 2a of electromagnetic force generating unit 2 via inclosure hub portion 14, so rotor 3 can freely rotate with respect to electromagnetic force generating unit 2.Because the relative portion 12 at rotor 3 is provided with long through-hole 19 and long through-hole 20, when rotor 3 rotations, sometimes the lubricant oil of bearing can be via on the opposing side between long through-hole 19 and the long through-hole 20 relative portions 12 of arrival and the armature 4, the friction factor of opposing side is reduced, make to be in the relative portion 12 of bonding state and the frictional force between the armature 4 reduces, thereby can not transmit required torque.
The model utility content
The utility model provides relative portion that a kind of lubricant oil of bearing of rotor can not flow to rotor and the electromagnetic connector on the opposing side between the armature.
The electromagnetic connector of first technological scheme of the present utility model is characterized in that, to its axial the other end arranged coaxial successively electromagnetic force generating unit, rotor part, armature and drum (roller) is arranged from its axial end; This electromagnetic force generating unit comprises yoke and the coil that installs around on this yoke; Described rotor part can be rotated to support in the center hole that extends vertically of described yoke via bearing, in this rotor part, be provided with in the axial direction the relative portion with armature opposite circular shape, between described relative portion and discoid described armature, be folded with the spring of separating for rotor part and described armature, be provided with the part magnetic flux restriction portion of relative portion that forms of attenuation in the axial direction that makes described relative portion in described relative portion, be provided with the part armature magnetic flux restriction portion that forms of attenuation in the axial direction that makes described armature at described armature; Magnetic flux restriction portion of described relative portion and described armature magnetic flux restriction portion are separated with at interval diametrically mutually, under the state to described coil electricity, described electromagnetic force generating unit produces the described armature of electromagnetic attracting force and elastic force that described armature overcomes described spring is moved and final pressure is contacted with described relative portion relative to portion towards described, under the state of described coil blackout, attract the electromagnetic force of described armature to disappear, described spring is pushed described armature and leave with described relative part open from described relative portion.
Adopt the electromagnetic connector of this first technological scheme, since the magnetic flux restriction portion in the relative portion of being located at be with the part of described relative portion in the axial direction attenuation form, it or not through hole, therefore, bearing lubricated can not flow on the opposing side relative with relative portion of the opposing side relative with armature of relative portion and armature, thereby solved the problem in the background technique effectively.
The electromagnetic connector of second technological scheme of the present utility model is on the basis of described first scheme, it is characterized in that, in this rotor part, extends cylindric hub portion from discoid relative portion along portion's central axis relatively to described electromagnetic force generating unit side; The central through bore of described electromagnetic force generating unit can be run through with respect to described electromagnetic force generating unit rotatably around its axis in this cylindric hub portion, and its tip portion is stretched out and as one input part and the carry-out part from the axial end of described electromagnetic force generating unit; Described drum is provided with the center axial region along its central axial direction to a described axial distolateral extension, this center axial region runs through the endoporus of the central through bore of central through bore, the spring of described armature, described cylindric hub portion and stretches out and as another person input part and the carry-out part from the axial end of described rotor part, and described drum can be with respect to described rotor part around its axis rotation, and described armature is configured to slide vertically with respect to described drum but can not rotates around described center axial region.
Adopt the electromagnetic connector of second technological scheme of the present utility model, can constitute electromagnetic connector with simple structure.
The electromagnetic connector of the 3rd technological scheme of the present utility model, be on the basis of described first scheme, it is characterized in that, in described rotor part, extend electromagnetic force generating unit side shaft portion and extend bulging side shaft portion along portion's central axis relatively to described bulging side from discoid relative portion along portion's central axis relatively to described electromagnetic force generating unit side, the central through bore of described electromagnetic force generating unit can be run through rotatably around its axis in described electromagnetic force generating unit side shaft portion with respect to described electromagnetic force generating unit, and its tip portion is stretched out and as one input part and the carry-out part from the described axial side of described electromagnetic force generating unit, be provided with to the side-prominent hub cylindraceous portion of described armature at described drum, described bulging side shaft portion can be with respect to described armature, described spring and the described central through bore that runs through described armature bulgingly, the center hole of the central through bore of described spring and described hub portion, the central through bore of described armature is run through in this hub portion, described armature can be vertically slides in described hub portion, can not rotate around described hub portion, described drum is as another person in input part and the carry-out part.
Adopt the electromagnetic connector of the 3rd technological scheme of the present utility model, can constitute electromagnetic connector with simple structure.
The electromagnetic connector of the 4th technological scheme of the present utility model, be on the basis of arbitrary technological scheme in described the first～three technological scheme, it is characterized in that, be provided with magnetic flux restriction portion of a plurality of described relative portion in described relative portion, these magnetic flux restriction portions of relative portion are spaced from each other the compartment of terrain and are evenly arranged on the concentric circle centered by the central axis of described rotor part;
Be provided with a plurality of described armature magnetic flux restriction portion at described armature, these armature magnetic flux restriction portions are spaced from each other the compartment of terrain and are evenly arranged on the concentric circle centered by the central axis of described rotor part; Magnetic flux restriction portion of described relative portion and described armature magnetic flux restriction portion be staggered positions diametrically mutually.
Adopt the electromagnetic connector of the 4th technological scheme of the present utility model, can increase the combination force of electromagnetic connector bonding state by magnetic flux restriction portion suitably is set.
The electromagnetic connector of the 5th technological scheme of the present utility model is on the basis of arbitrary technological scheme in described the first～three technological scheme, it is characterized in that described spring is wavy leaf spring.
Adopt the electromagnetic connector of the 5th technological scheme of the present utility model, can make simply for the member that will separate between rotor part and the armature.
The electromagnetic connector of the 6th technological scheme of the present utility model, be on the basis of arbitrary technological scheme in described the first～three technological scheme, it is characterized in that, described rotor part is provided with the annulus cylindraceous that extends to a described axial side from the outer periphery portion of described relative portion, and at least a portion of described yoke is arranged between annulus and the described cylindric hub portion in the gap; This annulus is as one in the described input part of electromagnetic connector and the carry-out part.
Adopt the electromagnetic connector of the 6th technological scheme of the present utility model, can cover described yoke and described coil with annulus, in order to avoid described coil damaged.
Description of drawings
Fig. 1 is the sketch of an example of the electromagnetic connector of expression prior art.
Fig. 2 be expression first mode of execution of the present utility model electromagnetic connector partly cut open side view.
Fig. 3 be expression second mode of execution of the present utility model electromagnetic connector partly cut open side view.
Embodiment
Below be used for to implement preferred forms of the present utility model based on description of drawings.
First mode of execution
As shown in Figure 2, the electromagnetic connector of first mode of execution of present embodiment has electromagnetic force generating unit 8, rotor part 5, armature 3 and drum 1 from its axial left end to its axial right-hand member arranged coaxial successively; This electromagnetic force generating unit 8 comprises yoke 9 cylindraceous and the coil 10 that installs around in the annular gap in right-end openings of this yoke 9; In this rotor part 5, extend cylindric hub portion 11 from discoid relative portion 12 along portion's central axis relatively to described electromagnetic force generating unit 8 sides; The central through bore of described electromagnetic force generating unit 8 can be run through with respect to described electromagnetic force generating unit 8 rotatably around its axis in this cylindric hub portion 11, and in use, electromagnetic force generating unit 8 is fixed.
The cylindric hub portion 11 of rotor part 5 can be rotated to support in the center hole 22 that extends vertically of described yoke 9 via bearing (for example rolling bearing or infiltration have the sliding bearing of lubricant oil), and rotor part 5 can be supported on the electromagnetic force generating unit 8 with respect to electromagnetic force generating unit 8 rotatably around its central axis.
In this rotor part 5, be provided with in the axial direction the relative portion 12 with armature 3 opposite circular shapes, being folded with what select for use in the present embodiment for the spring 4(that rotor part 5 and described armature 3 are separated between described relative portion 12 and discoid described armature 3 is wavy leaf spring), be provided with spring at the face relative with spring 4 of described relative portion 12 and keep out of the way depressed part 27, when engaging between described relative portion 12 and discoid described armature 3, the spring 4 that is driven plain is kept out of the way that spring is kept out of the way in the depressed part 27 and can not brought obstacle to engaging between relative portion 12 and the discoid described armature 3.Be provided with the part magnetic flux restriction portion 17 that forms of attenuation in the axial direction that makes described relative portion 12 in described relative portion 12.Though it is not shown, be provided with a plurality of magnetic flux restriction portion 17, for example with background technique in rotor part on magnetic flux restriction portion (namely, magnetic flux blocking-up portion) identically be provided with three magnetic flux restriction portions, these three magnetic flux restriction portions are arranged on the circle centered by the central axis of rotor part 5 too.And to be three magnetic flux restriction portions be distributed on this circle upwards being spaced from each other the compartment of terrain week, these three magnetic flux restriction portions 17 during from axial observation for having the circular arc strip of certain width diametrically.Described rotor part 5 is provided with the annulus cylindraceous 23 that extends to a described axial side from the outer periphery portion of described relative portion 12, and at least a portion of described yoke 9 is arranged between annulus 23 and the described cylindric hub portion 11 in the gap; This annulus 23 is as one in the described input part of electromagnetic connector and the carry-out part.
In the present embodiment, making the 12 local attenuation of relative portion form magnetic flux restriction portion of relative portion 17 is to cave in simultaneously and form in the part of the left and right sides face by relative portion 12, but being not limited thereto, also can be only to make the local dent of relative portion 12 right flanks form magnetic flux restriction portion of relative portion 17.
These three magnetic flux restriction portions of relative portion 17 are arranged in the position of the close annulus 23 of relative portion 12.
Be provided with the part armature magnetic flux restriction portion 18 that forms of attenuation in the axial direction that makes described armature 3 at described armature 3; In the present embodiment, be to make the local dent of the left surface of armature 3 form armature magnetic flux restriction portion 18, but be not limited to this, also can be to make the part of the left and right sides face of armature 3 cave in to form armature magnetic flux restriction portion 18 simultaneously.In the present embodiment, a plurality of armature magnetic flux restriction portion 18 is arranged, identical with the quantity of magnetic flux restriction portion of relative portion 17, but also can the quantity difference.These a plurality of armature magnetic flux restriction portions 18 and/or magnetic flux restriction portion of relative portion 17 can circumferentially arranging along rotor part 5 and armature 3 equably.
Armature magnetic flux restriction portion 18 is arranged on the circle centered by the central axis of armature 3, and is to be spaced from each other the compartment of terrain to be distributed on this circle.Armature magnetic flux restriction portion 18 is positioned at the radially inner side of magnetic flux restriction portion of relative portion 17, and magnetic flux restriction portion of portion 17 is separated with at interval diametrically each other with armature magnetic flux restriction portion 18 relatively.
In the present embodiment, relative portion 12 at rotor 5 is provided with magnetic flux restriction portion of the relative portion of a circle 17, but also can be to be provided with the relative magnetic flux restriction 17(of portion of portion of two circles to be equipped with magnetic flux restriction portion of a plurality of relative portion 17 at two concentric circles centered by the central axis of relative portion 12).In this case, axially during unilateral observation, armature magnetic flux restriction portion 18 is diametrically between magnetic flux restriction portion of the relative portion of two circles 17.
Certainly, also can be at armature 3 two circle armature magnetic flux restriction portions 18 to be set, be provided with magnetic flux restriction portion of the relative portion of a circle 17 in the relative portion 12 of rotor 5, in this case, axially during unilateral observation, magnetic flux restriction portion of portion 17 is diametrically between two circle armature magnetic flux restriction portions 18 relatively.
Described drum 1 is provided with the center axial region 16 along its central axial direction to a described axial distolateral extension as the input part of electromagnetic connector and another person in the carry-out part, this center axial region 16 runs through the endoporus 15 of the central through bore 13 of central through bore 14, the spring 4 of described armature 3, described cylindric hub portion 11 and fits together with described electromagnetic force generating unit 8, described rotor part 5, described armature 3, and described drum 1 can be with respect to described rotor part 5 around its axis rotation.
As an example, the central through bore 14 of described armature 3 is splined hole, form spline shaft with central through bore 14 types of described armature 3 coupling in the part (right side) that cooperates with central through bore 14 described armature 3 the center of described drum 1 axial region 16, thereby make described armature 3 to slide vertically with respect to the described center axial region 16 of described drum 1 but can not be around 16 rotations of described center axial region.
Cooperating between the described center axial region 16 of described armature 3 and described drum 1 is not limited to spline fitted, also can be to realize being connected between the described center axial region 16 of described armature 3 and described drum 1 by a square key.In a word, so long as described armature 3 can be slided vertically with respect to the described center axial region 16 of described drum 1 but can not rotate around described center axial region 16, and the torque that can transmit required size between described armature 3 and the described drum 1 does not limit its Placement.For example so long as can make that described armature 3 can slide vertically with respect to the rotating center of drum 1, this moment armature 3 with center axial region 16 and needn't have direct incidence relation.
In addition, for example, it is also conceivable that drum 1 be provided for connecting the hole of armature magnetic flux restriction portion 18 projection, relatively rotate to carry out above-mentioned relative slip and restriction thus; It is also conceivable that perhaps the periphery at armature 3 arranges tooth, tooth carries out above-mentioned relative slip and restriction relatively rotates and similarly arrange on the cylindrical part 26 of drum.
In the present embodiment, described drum 1 is to constitute by described center axial region 16 with from the wall portion 25 that the right-hand member of described center axial region 16 extends radially outward and the cylindrical part 26 of extending to the left from wall portion 25 outer periphery.Described electromagnetic force generating unit 8, described rotor part 5 and armature 3 are accommodated in the gap between cylindrical part 26 and the center axial region 16.Thereby form a very compact electromagnetic connector.
Be provided with packing ring 2 between the wall portion 25 of described drum 1 and armature 3, this packing ring 2 is enclosed within on the described center axial region 16.
The electromagnetic connector of present embodiment, under the state to described coil 10 energisings, described electromagnetic force generating unit 8 produces electromagnetic force, attract described armature 3 and elastic force that described armature 3 overcomes described spring 4 is moved and pressure is contacted with described relative portion 2 relative to portion 12 towards described, under the state of described coil 10 outages, attract the electromagnetic force of described armature 3 to disappear, described spring 4 is pushed described armature 3 and it is separated with described relative portion 12 open from described relative portion 12.Thereby play the effect of electromagnetic clutch.
Second mode of execution
Below the electromagnetic connector of second mode of execution of the present utility model is described.In the following description, describe for the part different with first mode of execution, omit the explanation for the part identical with first mode of execution.
The electromagnetic connector of second mode of execution, in rotor part 5, extend electromagnetic force generating unit side shaft portion 28 and extend bulging side shaft portion 29 along portion's central axis relatively to described bulging side from discoid relative portion 12 along portion's central axis relatively to described electromagnetic force generating unit 8 sides, described electromagnetic force generating unit side shaft portion 28 can run through the central through bore 22 of described electromagnetic force generating unit 8 and its tip portion rotatably with respect to described electromagnetic force generating unit 8 around its axis and stretch out and as one input part and the carry-out part from the left-hand end of described electromagnetic force generating unit 8; Described drum 1 is provided with to the side-prominent hub cylindraceous portion 21 of described armature 3, can be with respect to described armature 3 in described bulging side shaft portion 29, described spring 4 and described drum 1 ground run through the central through bore 14 of described armature 3, the center hole 20 of the central through bore 13 of described spring 4 and described hub portion 21, the central through bore 14 of described armature 3 can be run through in this hub portion 21, described hub portion 21 forms splined shaft, the central through bore 14 of described armature 3 is splined hole, thereby make described armature 3 can be vertically in described hub portion 21, in suitable stroke range, slide, but can not rotate around described hub portion 21, described drum is as another person in input part and the carry-out part.
A variation as second mode of execution, also hub portion 21 these splined shafts directly can be formed at the axial appropriate location of bulging side shaft portion 29 as the part of drum side shaft portion 29, correspondingly be not formed with above-mentioned hub portion 21 1 of drum, thus and it is local or be formed with spline fully and assemble for these drum side shaft portion 29 insertions vertically on the internal surface of the center hole 20 of this drum 1.
More than enumerated several embodiment of the present utility model, but scope of the present utility model is not limited to above embodiment, the equivalent technical solutions of above-mentioned embodiment and those skilled in the art the variation etc. of thinkable above-mentioned embodiment all should be included in the scope of the present utility model.
Claims (7)
1. an electromagnetic connector is characterized in that, electromagnetic force generating unit (8), rotor part (5), armature (3) and drum (1) are arranged from its axial end to its axial the other end arranged coaxial successively; This electromagnetic force generating unit (8) comprises yoke (9) and installs around coil (10) on this yoke (9); Described rotor part (5) can be rotated to support in the center hole (22) that extends vertically of described yoke (9) via bearing, be provided with in the axial direction relative portion (12) with armature (3) opposite circular shape in this rotor part (5), between described relative portion (12) and discoid described armature (3), be folded with the spring of separating for rotor part (5) and described armature (3) (4), be provided with the part relative magnetic flux restriction portion of portion (17) that forms of attenuation in the axial direction that makes described relative portion (12) in described relative portion (12), be provided with the part armature magnetic flux restriction portion (18) that forms of attenuation in the axial direction that makes described armature (3) at described armature (3); Described relative magnetic flux restriction portion of portion (17) and described armature magnetic flux restriction portion (18) are separated with at interval diametrically mutually, under the state to described coil (10) energising, described electromagnetic force generating unit (8) produces the described armature of electromagnetic attracting force (3) and makes elastic force that described armature (3) overcomes described spring (4) move also relative to portion (12) towards described that final pressure is contacted with described relative portion (12), under the state of described coil (10) outage, attract the electromagnetic force of described armature (3) to disappear, described spring (4) is pushed described armature (3) and it is separated with described relative portion (12) open from described relative portion (12).
2. electromagnetic connector according to claim 1 is characterized in that, in this rotor part (5), extends cylindric hub portion (11) along relative portion central axis to described electromagnetic force generating unit (8) side from discoid relative portion (12); The central through bore of described electromagnetic force generating unit (8) can be run through with respect to described electromagnetic force generating unit (8) rotatably around its axis in this cylindric hub portion (11), and its tip portion is stretched out and as one input part and the carry-out part from the axial end of described electromagnetic force generating unit (8); Described drum (1) is provided with the center axial region (16) along its central axial direction to a described axial distolateral extension, this center axial region (16) runs through the central through bore (14) of described armature (3), the central through bore (13) of spring (4), the endoporus (15) of described cylindric hub portion (11) also stretches out and as another person input part and the carry-out part from the axial end of described rotor part (5), and described drum (1) can be with respect to described rotor part (5) around its axis rotation, and described armature (3) is configured to slide vertically with respect to described drum (1) but can not rotates around described center axial region (16).
3. electromagnetic connector according to claim 1, it is characterized in that, in described rotor part (5), extend electromagnetic force generating unit side shaft portion and extend bulging side shaft portion along portion's central axis relatively to described bulging side from discoid relative portion (12) along relative portion's central axis to described electromagnetic force generating unit (8) side, the central through bore (9) of described electromagnetic force generating unit (8) can be run through rotatably around its axis in described electromagnetic force generating unit side shaft portion with respect to described electromagnetic force generating unit (8), and its tip portion is stretched out and as one input part and the carry-out part from the described axial side of described electromagnetic force generating unit (8), be provided with to the side-prominent hub portion cylindraceous (21) of described armature (3) at described drum (1), described bulging side shaft portion (29) can be with respect to described armature (3), described spring (4) and described drum run through the central through bore (14) of described armature (3) (1), the central through bore (13) of described spring (4) and the center hole (20) of described hub portion (21), the central through bore (14) of described armature (3) can be run through in this hub portion (21), described armature (3) can slide in described hub portion (21) vertically, can not rotate around described hub portion (21), described drum is as another person in input part and the carry-out part.
4. according to each described electromagnetic connector in the claim 1～3, it is characterized in that, be provided with a plurality of described relative magnetic flux restriction portions of portion (17) in described relative portion (12), these relative magnetic flux restriction portions of portion (17) are spaced from each other the compartment of terrain and are evenly arranged on the concentric circle centered by the central axis of described rotor part (5);
Be provided with a plurality of described armature magnetic flux restriction portions (18) at described armature (3), these armature magnetic flux restriction portions (18) are spaced from each other the compartment of terrain and are evenly arranged on the concentric circle centered by the central axis of described rotor part (5);
Described relative magnetic flux restriction portion of portion (17) and described armature magnetic flux restriction portion (18) be staggered positions diametrically mutually.
5. according to each described electromagnetic connector in the claim 1～3, it is characterized in that described spring (4) is wavy leaf spring.
6. electromagnetic connector according to claim 2, it is characterized in that, described rotor part (5) is provided with the annulus cylindraceous (23) that extends to a described axial side from the outer periphery portion of described relative portion (12), and at least a portion of described yoke (9) is arranged between annulus (23) and the described cylindric hub portion (11) in the gap; This annulus (23) is as one in the described input part of electromagnetic connector and the carry-out part.
7. according to each described electromagnetic connector in the claim 1～3, it is characterized in that, be provided with described armature magnetic flux restriction portion (18) and/or described relative magnetic flux restriction portion of portion (17) that a plurality of edges are circumferentially arranged equably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196717 CN203223501U (en) | 2013-04-18 | 2013-04-18 | Electromagnetic connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196717 CN203223501U (en) | 2013-04-18 | 2013-04-18 | Electromagnetic connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223501U true CN203223501U (en) | 2013-10-02 |
Family
ID=49250505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320196717 Expired - Lifetime CN203223501U (en) | 2013-04-18 | 2013-04-18 | Electromagnetic connection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203223501U (en) |
-
2013
- 2013-04-18 CN CN 201320196717 patent/CN203223501U/en not_active Expired - Lifetime
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131002 |
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| CX01 | Expiry of patent term |