CN104471655A - Electromagnetic actuator - Google Patents
Electromagnetic actuator Download PDFInfo
- Publication number
- CN104471655A CN104471655A CN201380035460.1A CN201380035460A CN104471655A CN 104471655 A CN104471655 A CN 104471655A CN 201380035460 A CN201380035460 A CN 201380035460A CN 104471655 A CN104471655 A CN 104471655A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- core
- secured core
- coil
- seal member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
- H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
- Magnetically Actuated Valves (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Provided is an electromagnetic actuator such that size reduction in accordance with the outer diameter of a coil winding can be achieved while sealing property between a fixed core and a coil part is ensured. On the outside of the outer periphery of a fixed core (12), a cylindrical part (15a) of a moving core (15) is disposed movably along its axis. A coil part (16) is disposed on the outside of the outer periphery of the cylindrical part (15a). The fixed core (12) includes a protruding part (12b) protruding from an end of the cylindrical part (15a). Between the protruding part (12b) and the coil part (16), a ring-shaped seal member (18) is disposed, so that a gap corresponding to the thickness of the cylindrical part (15a) is provided between the protruding part (12b) and the coil part (16). Thus, by disposing the ring-shaped seal member in the gap between the protruding part (12b) and the coil part (16), size reduction in accordance with the outer diameter of the coil winding can be achieved while the sealing property between the fixed core (12) and the coil part (16) is ensured.
Description
Technical field
The present invention relates to for using solenoid to make axle reciprocating action to drive the electromagnetic driver of various parts.Background technology
The electromagnetic force acted on along between the secured core and movable core of the magnetic circuit configurations formed by solenoid coil utilizes as attraction by the electromagnetic driver of linear solenoid etc.
The structure of general linear solenoid is the structure (for example, referring to patent documentation 1 and patent documentation 2) possessing secured core outside the periphery of movable core.
Fig. 4 is the cutaway view representing an existing solenoidal example.This solenoid is be positioned at vertically across the inner side of two secured cores 1,2 of the gap relative configuration of regulation, arranging movable core 3 movably vertically, in the structure of the arranged outside coil portion 5 of secured core 1,2.
Coil portion 5 possesses bobbin 5a and the coil 5b be wound on this bobbin 5a, between the bobbin 5a and secured core 1,2 of coil portion 5, arrange annular seal member (O ring) 4a, 4b.
Seal member 4a is set between the flange 5c of the lower end of the flange 1a be arranged on the first secured core 1 and bobbin 5a, seal member 4b is set between the upper end outer peripheral face and the upper end inner peripheral surface of bobbin 5a of the second secured core 2.Seal member 4a is flat seal, and seal member 4b is radial seal.
Further, in the diagram, represent that movable core 3 iron core 1 that is fixed attracts and moves to the state of secured core 1 side than the axes O side that keeps left, represent that movable core 3 is positioned at the state of secured core 2 side on the right side than axes O.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2009-275841 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2006-153283 publication
Summary of the invention
Invent problem to be solved
, when the electromagnetic driver not needing large attraction, coil volume number few, need the configuration space of seal member (O ring) 4a of flat seal side, can not carry out rolling up the corresponding thin-long of external diameter to coil.
That is, first, in order to use seal member 4a reliably to seal between the flange 1a of secured core 1 and the flange 5c of bobbin 5a, the seal member (O ring) of given size (specified diameter and prescribed level) is needed.
On the other hand, when coil volume number tails off, the diameter of the bobbin 5a of winding around can be made to diminish.That is, in Figure 5, as dotted line represents, the external diameter of the flange 5c of the lower end of bobbin 5a can be made to diminish.
, when the external diameter of flange 5c diminishes, a part of the seal member 4a of given size is given prominence to and can not guarantee sealing fully, so the external diameter of the diameter of flange 5c, i.e. coiling 5a can not diminish from flange 5c.
So, even if coil volume number tails off, due to the external diameter of bobbin 5a can not be made to diminish, so, roll up the corresponding reduced of number to coil, namely roll up the consistent thin-long of external diameter with coil and can not carry out.
The present invention is the device of invention in view of the foregoing, its object is to provide a kind of electromagnetic driver, guarantees sealing between secured core to coil portion and can carry out rolling up the corresponding thin-long of external diameter with coil.
For solving the method for problem
To achieve these goals, the present invention, outside the periphery of secured core, arranges the above-mentioned cylindrical portion with the movable core of cylindrical portion vertically movably, in the electromagnetic driver of the periphery arranged outside coil portion of above-mentioned cylindrical portion, it is characterized in that,
Above-mentioned secured core has from the outstanding protuberance in the end of above-mentioned cylindrical portion,
Between this protuberance and above-mentioned coil portion, annular seal member is set.
In the present invention, between the protuberance given prominence to from the end of cylindrical portion and coil portion, the gap of cylindrical portion wall thickness degree is at least set to diametrically.Therefore, by the gap, seal member is set between protuberance and coil portion, even if make bobbin external diameter greatly constant, also can guarantees the sealing between secured core and coil portion.Therefore, guarantee the sealing between secured core and coil portion, and can carry out rolling up the corresponding thin-long of external diameter to coil.
In said structure of the present invention, above-mentioned protuberance forms the flange orthogonal with the axle of above-mentioned cylindrical portion, preferably above-mentioned seal member is set between this flange and the end face of above-mentioned coil portion.
According to such structure, owing to arranging seal member between flange and the end face of coil portion, so, can reliably be fixed flat seal between iron core and coil portion by sealing parts.
In addition, in said structure of the present invention, possess relative to above-mentioned secured core in the axial direction thereof across another secured core of the gap relative configuration of regulation,
Above-mentioned movable core possesses: the above-mentioned cylindrical portion outside the periphery being arranged at above-mentioned secured core; Arrange in the mode passing across above-mentioned gap, form the bottom at the end of above-mentioned cylindrical portion,
Between the outer peripheral face and the inner peripheral surface of above-mentioned coil portion of another secured core above-mentioned, another seal member can be set.
According to such structure, cross the mode in the gap between two secured cores with the bottom of movable core and formed, so, can not be leaked to other directions by the magnetic flux in gap, produce electromagnetic force by bottom, attraction generation efficiency can be improved, obtain large attraction.In addition, two secured cores from mutual opposite sides pair in bottom, can be got rid of and mutually guarantee broad interface interferingly, from this aspect, also can improve attraction generation efficiency.
In addition, owing to arranging another seal member between the outer peripheral face and the inner peripheral surface of above-mentioned coil portion of another secured core, so, the radial seal reliably can carrying out between another secured core and coil portion by sealing parts.
Invention effect
According to the present invention, secured core has from the outstanding protuberance in the end of the cylindrical portion of movable core, annular seal member is set between this protuberance and coil portion, thus can guarantees that the sealing between secured core to coil portion also can carry out rolling up the corresponding thin-long of external diameter with coil.
Accompanying drawing explanation
Fig. 1 is the figure representing the driver relating to embodiments of the present invention, is its cutaway view.
Fig. 2 is the skeleton diagram representing this driver pith.
Fig. 3 is the skeleton diagram of pith of this driver when representing that coil volume number is few.
Fig. 4 is the figure of the example representing existing driver, is its cutaway view.
Fig. 5 is the expanded view in X circle portion in the diagram.
Embodiment
Below, be described with reference to accompanying drawing about embodiments of the present invention.
Fig. 1 is the cutaway view representing the electromagnetic driver relating to embodiments of the present invention.This electromagnetic driver is such as making the fuel-control lever of diesel internal combustion engine to stopping direction action, automatically stopping engine, or for automatically carrying out the device of Negative selection locking in four-wheel manual transmission automobile.
This electromagnetic driver possesses on axes O direction across first secured core (another secured core in scheme three) 11 of the clearance G relative configuration of regulation and the second secured core (secured core in scheme one) 12.
Outside the periphery of the second secured core 12, the movable core 15 with cylindrical portion 15a is set vertically movably.In addition, outside the periphery of cylindrical portion 15a and outside the periphery of the first secured core 11, coil portion 16 is set.
Further, in FIG, than axes O keep left side represent movable core 15 be fixed iron core 11 attract and move to the state of secured core 11 side, represent that movable core 15 is positioned at the state of secured core 12 side than axis by the right side of O.
Coil portion 16 makes magnetic field arrive two secured cores 11,12 and movable core 15 ground forms magnetic track on these iron cores, moves movable core 15 along axes O, possesses bobbin 16a, the coil 16b be wound on this bobbin 16a.
These each parts (secured core 11,12, movable core 15, coil portion 16) be Rotational Symmetry substantially, namely section is formed as round-shaped, is accommodated in columnar shell 30.
Two secured cores 11,12 have flange 21,22 in side, upper and lower end face respectively, and the magnetic field produced by coil portion 16 via the induction of this flange 21,22, clearance G is formed the magnetic flux that density is high.If be energized in the coil 16b of coil portion 16, then produce attraction from two secured cores 11,12 respectively relative to movable core 15, as aftermentioned, the attraction of the first secured core 11 is large, so movable core 15 moves to the first secured core 11 during energising.That is, the first secured core 11 mainly carries out sucking action, and the second secured core 12 carries out magnetic flux guiding function.First secured core 11 forms through hole 11a along axes O, and in this through hole 11a, arrange axle 20 freely movably by two bearings, the front end of this axle 20 is fixed on movable core 15.The external diameter of the second secured core 12 is less than the external diameter of the first secured core 11, thus, between the inner face of coil portion 16, forms the space of the cylindrical portion 15a of configuration movable core 15.
Movable core 15 is formed as cup-shaped (bottomed cylindrical) by the cylindrical portion 15a extended along axes O direction with the bottom 15b that the mode passing across clearance G extends on the direction crossing with axes O, cylindrical portion 15a forms magnetic flux guide portion, and bottom 15b forms magnetic flux service portion.
Further, in the through hole being formed at bottom 15b central authorities, insert the front end of axle 20 and fix.Inner face and the outside of the second secured core 12 of cylindrical portion (magnetic flux guide portion) 15a have small―gap suture and relative, the direction that second secured core 12 is substantially vertical with these faces with the major part edge of the magnetic flux between movable core 15, that is, vertical with axes O direction is by here.Therefore, between the second secured core 12 and movable core 15, produce the power on axes O direction hardly.On the other hand, the first secured core 11 is only towards bottom (magnetic flux service portion) 15b of movable core 5, and the magnetic flux being created on this has the composition on axes O direction, so, produce the attraction on axes O direction.Therefore, the attraction towards the first secured core 11 acts on movable core 15.
And, in the present embodiment, at the end face of the clearance G side of the first secured core 11, form the recess 32 with the conical surface 31 that side expands to peristome side, bottom (magnetic flux service portion) 15b as the part on the other side of movable core 15 is formed as the shape corresponding to this recess 32.That is, the magnetic flux service portion 15b of this example possesses the first service portion 34 of the conical surface of the conical surface 31 had corresponding to recess 32, has the second service portion 35 of the plane of the bottom surface corresponding to recess 32.By such structure, reduce the change of attraction relative to the displacement of movable core 15 in axes O direction, suppress the change of the attraction in stroke range, linear attraction characteristic can be obtained.
Above-mentioned second secured core 12 forms above-mentioned flange 22 in the integration of the upper end of columned secured core main body 12a and forms, and the upper end 12b of secured core main body 12a is formed from the outstanding protuberance 12b in the upper end of the cylindrical portion 15a of movable core 15.Further, in the upper end of this protuberance 12b, above-mentioned flange 22 is formed coaxially with secured core main body 12a.
Between the protuberance 12b and the bobbin 16a of coil portion 16 of above-mentioned secured core 12, the annular seal member 18 formed with O ring is set.
That is, in the upper surface of bobbin 16a, the recess being used for embedding sealing parts 18 is formed, at these recess embedding sealing parts 18.The first half of seal member 18 is given prominence to upward from recess, and this outstanding seal member 18 fluid-tight engagement is in above-mentioned flange 22.So, seal member 18 is set between the end face of the bobbin 16a of flange 22 and coil portion 16.Sealing parts 18 form flat seal.
In addition, another seal member 19 is set between above-mentioned secured core 11 and coil portion 16.That is, at the bottom inner peripheral surface of the bobbin 16a of coil portion 16, the recess being used for embedding sealing parts 19 is formed, embedding sealing parts 19 in this recess.Inner side half part of seal member 19 is given prominence to the inside from recess, the outer peripheral face of this outstanding seal member 19 and secured core 11 and flange 21 fluid-tight engagement.So, another seal member 19 is set between the outer peripheral face and the inner peripheral surface of coil portion 16 of secured core 11.This another seal member 19 forms radial seal.
According to the present embodiment, as shown in Figures 2 and 3, give prominence in the end of the cylindrical portion 15a from movable core 15, between the protuberance 12b of the secured core 12 and bobbin 16a of coil portion 16, the gap S of the wall thickness degree of cylindrical portion 15a is at least set in radial direction.
Therefore, by the S of this gap, annular seal member 18 is set between protuberance 12b and the bobbin 16a of coil portion 16, even if the external diameter of bobbin 16a is little, also can guarantees the sealing between secured core 12 and coil portion 16.Therefore, guarantee the sealing between secured core 12 and coil portion 16, carry out rolling up the consistent thin-long of external diameter with coil.Namely, the situation (situation that the radial thickness of coil 16b diminishes) that the coil volume number of the coil portion 16 in fig. 2 tails off as shown in Figure 3, also the diameter of bobbin 16a can be correspondingly made to diminish, so, can guarantee hermetically to carry out rolling up the corresponding thin-long of external diameter to coil.
In addition, seal member 18 is configured at compared to coil portion 16 internal diameter in the inner part, so, the diameter dimension of seal member 18 can be made to diminish, the reduction of its departmental cost can be sought.
In addition, owing to arranging seal member 18 between the flange 22 of secured core 12 and the end face of the bobbin 16a of coil portion 16, therefore, it is possible to by sealing parts 18, be reliably fixed the flat seal between iron core 12 and coil portion 16.
And, owing to arranging seal member 19 between the outer peripheral face and the bobbin 16a of coil portion 16 of secured core 11, be therefore reliably fixed the radial seal between iron core 11 and coil portion 16 by sealing parts 19.
In addition, because the mode of the clearance G passed across between two secured cores 11,12 with the bottom of movable core 15 (magnetic flux service portion) 15b is formed, therefore can not be leaked to other directions by the magnetic flux of clearance G, electromagnetic force is produced by bottom (magnetic flux service portion) 15, improve attraction generation efficiency, large attraction can be obtained.In addition, two secured cores 11,12 are upper from mutual opposite sides pair at bottom (magnetic flux service portion) 15b, can get rid of and mutually guarantee broad interface interferingly, from this aspect, also can improve attraction generation efficiency.
And, in the present embodiment, with in two secured cores 11,12, outside the periphery of secured core 12, the electromagnetic driver axially movably arranging the above-mentioned cylindrical portion of the movable core with cylindrical portion along it is described as an example, but the present invention is not limited thereto, the electromagnetic driver of tubular movable core is set movably vertically as being also applicable to outside the periphery of a secured core.
Symbol description
11-the first secured core (another secured core), 12-the second secured core (secured core), 15-movable core, 15a-cylindrical portion, 15b-bottom, 16-coil portion, 16a-bobbin, 16b-coil, 18-seal member (flat seal), 19-another seal member (radial seal), 22-flange.
Claims (3)
1. an electromagnetic driver, it is outside the periphery of secured core, and arrange the above-mentioned cylindrical portion with the movable core of cylindrical portion vertically movably, at the periphery arranged outside coil portion of above-mentioned cylindrical portion, the feature of this electromagnetic driver is,
Above-mentioned secured core has from the outstanding protuberance in the end of above-mentioned cylindrical portion,
Between this protuberance and above-mentioned coil portion, annular seal member is set.
2. electromagnetic driver according to claim 1, is characterized in that,
Above-mentioned protuberance forms the flange orthogonal with the axle of above-mentioned cylindrical portion,
Between this flange and the end face of above-mentioned coil portion, above-mentioned seal member is set.
3. electromagnetic driver according to claim 1 and 2, is characterized in that,
Possess relative to above-mentioned secured core in the axial direction across another secured core of the gap relative configuration of regulation,
Above-mentioned movable core possesses: the above-mentioned cylindrical portion outside the periphery being arranged at above-mentioned secured core; And arrange in the mode of crossing above-mentioned gap, and form the bottom at the end of above-mentioned cylindrical portion,
Between the outer peripheral face and the inner peripheral surface of above-mentioned coil portion of another secured core above-mentioned, another seal member is set.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-151665 | 2012-07-05 | ||
| JP2012151665A JP2014017282A (en) | 2012-07-05 | 2012-07-05 | Electromagnetic actuator |
| PCT/JP2013/068090 WO2014007230A1 (en) | 2012-07-05 | 2013-07-02 | Electromagnetic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104471655A true CN104471655A (en) | 2015-03-25 |
Family
ID=49881986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380035460.1A Pending CN104471655A (en) | 2012-07-05 | 2013-07-02 | Electromagnetic actuator |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2014017282A (en) |
| CN (1) | CN104471655A (en) |
| BR (1) | BR112014033103A2 (en) |
| IN (1) | IN2014DN10950A (en) |
| WO (1) | WO2014007230A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105917423B (en) * | 2014-01-29 | 2017-06-13 | 爱信艾达株式会社 | The manufacture method of electromagnetic actuator device and electromagnetic actuator device |
| DE112020006079T5 (en) * | 2019-12-12 | 2022-09-22 | Hitachi Astemo, Ltd. | Solenoid coil, damping force adjustment mechanism and damping force adjustable shock absorber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0641106U (en) * | 1992-11-02 | 1994-05-31 | 日信工業株式会社 | Electromagnetic actuator |
| JP2000320713A (en) * | 1999-05-17 | 2000-11-24 | Kane Kogyo Kk | Seal structure of solenoid coil in electromagnetic valve |
| JP2006153283A (en) * | 2006-03-14 | 2006-06-15 | Keihin Corp | Solenoid valve |
| US20090039992A1 (en) * | 2007-08-10 | 2009-02-12 | Keihin Corporation | Flat electromagnetic actuator |
| JP2011222799A (en) * | 2010-04-12 | 2011-11-04 | Denso Corp | Linear solenoid |
| WO2012067178A1 (en) * | 2010-11-17 | 2012-05-24 | 株式会社ミクニ | Electromagnetic actuator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57134473U (en) * | 1981-02-18 | 1982-08-21 | ||
| JPS57181014U (en) * | 1981-05-14 | 1982-11-17 | ||
| JP2000097361A (en) * | 1998-09-22 | 2000-04-04 | Tosok Corp | Solenoid valve |
| JP5205008B2 (en) * | 2007-08-10 | 2013-06-05 | 株式会社ケーヒン | Flat electromagnetic actuator |
| JP5601929B2 (en) * | 2010-08-06 | 2014-10-08 | 日立建機株式会社 | Electromagnetic drive unit |
-
2012
- 2012-07-05 JP JP2012151665A patent/JP2014017282A/en active Pending
-
2013
- 2013-07-02 CN CN201380035460.1A patent/CN104471655A/en active Pending
- 2013-07-02 BR BR112014033103A patent/BR112014033103A2/en not_active IP Right Cessation
- 2013-07-02 IN IN10950DEN2014 patent/IN2014DN10950A/en unknown
- 2013-07-02 WO PCT/JP2013/068090 patent/WO2014007230A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0641106U (en) * | 1992-11-02 | 1994-05-31 | 日信工業株式会社 | Electromagnetic actuator |
| JP2000320713A (en) * | 1999-05-17 | 2000-11-24 | Kane Kogyo Kk | Seal structure of solenoid coil in electromagnetic valve |
| JP2006153283A (en) * | 2006-03-14 | 2006-06-15 | Keihin Corp | Solenoid valve |
| US20090039992A1 (en) * | 2007-08-10 | 2009-02-12 | Keihin Corporation | Flat electromagnetic actuator |
| JP2011222799A (en) * | 2010-04-12 | 2011-11-04 | Denso Corp | Linear solenoid |
| WO2012067178A1 (en) * | 2010-11-17 | 2012-05-24 | 株式会社ミクニ | Electromagnetic actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014017282A (en) | 2014-01-30 |
| WO2014007230A1 (en) | 2014-01-09 |
| BR112014033103A2 (en) | 2017-06-27 |
| IN2014DN10950A (en) | 2015-09-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |