CN1162079A - Electromagnetic brake without excitating function - Google Patents
Electromagnetic brake without excitating function Download PDFInfo
- Publication number
- CN1162079A CN1162079A CN 97102005 CN97102005A CN1162079A CN 1162079 A CN1162079 A CN 1162079A CN 97102005 CN97102005 CN 97102005 CN 97102005 A CN97102005 A CN 97102005A CN 1162079 A CN1162079 A CN 1162079A
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- China
- Prior art keywords
- armature
- mentioned
- wheel hub
- rubber elastomer
- excitating
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Abstract
The invention is to prevent the gap between an armature and a magnet assembly from getting unbalanced to result in unstable disengagement operation, wherein the unbalance is generated when the armature is twisted to a certain degree to cause enlarged swinging at the time of brake disengagement. A bow-shaped snap ring 10 and a push nut assembly are installed at the external end face in axial direction of an armature 4 on its side opposite the gap, and a minor preload is given to the armature 4 in the direction of a magnet assembly 2. Eventually a resilient piece 5 of rubber, etc., is provided in a truncated conical ring shape having a parallelopiped section, and the outside surface of a hub 16 and the inside surface of the armature 4 are given tapers such as to mate with the rubber resilient piece 5.
Description
Relate generally to electromagnetic brake of the present invention particularly relates to the improvement of the electromagnetic brake without excitating function that uses permanent magnet.
Fig. 7 (A) is a halfbody front elevation of representing electromagnetic brake without excitating function in the past; Fig. 7 (B) is the A-A sectional view of Fig. 7 (A), the halfbody sectional view of the flux paths when being the expression energising; Fig. 8 has only the halfbody sectional view of the flux paths of permanent magnet when being the expression no electric circuit.
As Fig. 7 (A) with (B) shown in, this electromagnetic brake without excitating function comprises: group of magnets zoarium 2, the inside that coil 1 is equipped with in inside is equipped with the armature 4 of radial ringed permanent magnet 3, is constituted the wheel hub 6 of one by nylon-type rubber elastomer 5 and armature 4.
Group of magnets zoarium 2 is to be fixed on above fixing frame 9 grades with bolt 8; Stepped part 7a is arranged on turning axle 7, and under armature 4 was adsorbed on situation on the group of magnets zoarium 2, this stepped part 7a was the boundary that is used to stop the axially movable radius different piece of wheel hub 6; Periphery at wheel hub 6 is provided with stepped part 7b, is used for fixing rubber elastomer 5.
Below, the action of this electromagnetic brake without excitating function is described, in coil 1 during cold common state, as shown in Figure 8, because the magnetic flux φ of permanent magnet 3
1Effect, armature 4 overcomes the elastic force of rubber elastomer 5, to the direction absorption of the group of magnets zoarium 2 of fixed side, gap g eliminates because braking action, turning axle 7 stops and being held.
When in coil 1, switching on, shown in Fig. 7 (B),, form magnetic flux φ with above-mentioned permanent magnet 3 by the effect of group of magnets zoarium 2
1Rightabout magnetic flux φ
2, magnetic flux is cancelled each other on adsorption plane, because the recuperability of rubber elastomer 5; Produce gap g, armature 4 is decontroled, and braking action is removed.
At above-mentioned armature 4 by under the situations about decontroling since rubber elastomer 5 axially, radially, direction of twist all do not suffer restraints, in that axially some is crooked slightly, therefore as shown in Figure 8, the deflection of the F face (with reference to Fig. 9) of armature 4 increases, and the interval of gap g becomes unbalanced, and it is unstable to decontrol action.
The objective of the invention is, axial a small amount of pressure precompressed that armature applies towards the group of magnets zoarium is solved the problems referred to above by the back side from armature.
Fig. 1 is the 1st embodiment's of an electromagnetic brake without excitating function of the present invention halfbody sectional view;
Fig. 2 presentation graphs 1 employed semielliptic spring back-up ring, this figure (A) is a front elevation, this figure (B) is a sectional view;
Fig. 3 is the 2nd an embodiment's of the present invention halfbody sectional view;
Fig. 4 presentation graphs 3 employed pushing nut combinations bodies, this figure (A) is a front elevation, this figure (B) is a sectional view;
Fig. 5 is the 3rd an embodiment's of the present invention halfbody sectional view;
Fig. 6 is the 4th an embodiment's of the present invention halfbody sectional view;
Fig. 7 represents electromagnetic brake without excitating function in the past, and this figure (A) is the halfbody front elevation, and this figure (B) is the A-A sectional view of this figure (A) under the energising situation in coil;
Fig. 8 represents electromagnetic brake without excitating function in the past, is the A-A sectional view of the Fig. 7 (A) under the no electric circuit situation in coil.
Fig. 9 is the dynamic explanatory drawing of armature in when energising on the electromagnetic brake without excitating function that is illustrated in the past.
Fig. 1 is the 1st embodiment's of an expression electromagnetic brake without excitating function of the present invention halfbody sectional view, the identical mark of mark on the part identical with Fig. 7 (B), and only dissimilarity is illustrated.
On the cylindrical of wheel hub 16 near the axial arranged outside circular groove 16a of the mounting point of armature 4, section is arranged is arc check ring 10 (commodity selling is arranged) in engaging in this groove 16a, its front elevation is shown in Fig. 2 (A), the part of the annulus of abnormity hollow plectane forms breach and bends to intermediate projections, and its sectional view is shown in Fig. 2 (B); Above-mentioned semielliptic spring back-up ring 10 applies a small amount of precompressed towards fit 2 sides of group of magnets at axial direction to armature 4.
The 2nd embodiment such as halfbody sectional view are shown in Figure 3, be on the roughly the same position of periphery and the wheel hub 16 shown in Figure 1 of wheel hub 6, will push nut combinations body 11 to be pressed into, equally armature 4 is applied a small amount of precompressed with above-mentioned, this pushing nut combinations body 11 is shown in front elevation Fig. 4 (A) and sectional view Fig. 4 (B), by hollow circular ring plate inner circumference the wedge-like breach of a plurality of specific lengths outwards is set, and has along the part 11c of this barbed portion bending, intermediate projections.
Pushing nut combinations body 11 be commodity pushing nut 11a with surfaces armature 4 contacting sides on the ring-type anti-vibration plate 11b of making such as adhesive rubber form.
The 3rd embodiment as shown in Figure 5, rubber elastomer 15 is to make the hollow cone platform shape ring that section is a parallelogram, in the periphery of wheel hub 26 the tapering 26b of inclination is set, the radius of this tapering 26b is inwardly reduced the side by axial foreign side, so that combine closely with above-mentioned ring-shaped rubber elastomer 15.
Interior week at armature 4 also is processed with slope hole 4b, this slope hole 4b has parallel with above-mentioned tapering 26b, and than adding the slightly little internal diameter of internal diameter of the thickness gained of rubber elastomer 15 by the external diameter of tapering 26b, rubber elastomer 15 flexibly is fitted between the periphery of the interior perimembranous of armature 4 and wheel hub 26.
The slightly axially arranged outside stepped part 26a that leaves armature 4 at wheel hub 26 withstands on the axial outer end face of armature 4 top of flange 12a.Make the inner of the hollow disk-shaped part 12 with outward flange 12a lean against the outside of above-mentioned stepped part 26a, Fig. 3 and pushing nut 11a shown in Figure 4 are pressed against on the periphery of wheel hub 26, armature 4 is applied the precompressed of regulation.
The 4th embodiment as shown in Figure 6, with structure shown in Figure 5 almost is identical, but in the axial outside of the stepped part 36a of the wheel hub 36 that is equivalent to above-mentioned wheel hub 26, a circular groove 36b is set again, replace pushing nut 11a shown in Figure 5, be to use commodity check ring 13.
For the 1st～the 4th embodiment, when in coil 1, switching on, identical with the situation of Fig. 7 (B), armature 4 breaks away from group of magnets zoarium 2, and braking action is removed, but at this moment, because a spot of precompressed puts on the armature 4, therefore rubber elastomer 5 can not produce the deflection of the F face of armature shown in Figure 94 axially, radially the action with direction of twist suffers restraints, and predetermined gap g can keep well in equilibrium.
Get following effect according to above-mentioned:
1. can prevent the end face deflection of armature, it is stable that acting characteristic is removed in braking.
2. owing to take rubber elastomer is applied the structure of a small amount of precompressed,,, the effect of inhibition is arranged also, the judder of discomfort in the past can not take place for trembling of armature even use half-wave, the such pulsafeeder mode of all-wave.
3. the voltage range of braking releasing action is stable.
Claims (3)
1. an electromagnetic brake without excitating function comprises: with respect to utilizing motor etc. to carry out the fixing frame (9) that rotating turning axle (7) can link relatively pivotally; Be fixed on this fixing frame (9) and the group of magnets zoarium (2) of coil (1) is equipped with in inside with bolt (8) etc.; Magnetic gap (g) with this group of magnets zoarium (2) maintenance Rack is equipped with the armature (4) of radial ringed permanent magnet (3) in axially mutual subtend and inside; Rubber elastomer (5) by nylon-type connects to one with this armature 4 in the radial direction inboard, and is fixed on wheel hub (6) on the above-mentioned turning axle (7) with lock screw etc., it is characterized in that: also comprise
Circular groove (16a) is arranged on the axial periphery of approaching above-mentioned armature (4) mounting point of wheel hub (16) of the above-mentioned armature of supporting (4);
Semielliptic spring back-up ring (10) inserts and is fastened in the above-mentioned circular groove (16a), is a part of circular arc jaggy, and section is arc,
Above-mentioned circular groove (16a) and semielliptic spring back-up ring (10) apply a small amount of pressure precompressed that acts on towards above-mentioned group of magnets zoarium (2) to above-mentioned armature (4).
2. by the described electromagnetic brake without excitating function of claim 1, it is characterized in that: replace above-mentioned semielliptic spring back-up ring (10), be on the axial periphery of mounting point of the approaching above-mentioned armature (4) of the above-mentioned wheel hub (6) of the above-mentioned armature of supporting (4), by the outside pushing nut combinations body (11) is embedded, above-mentioned armature (4) is applied a small amount of pressure precompressed that acts on towards above-mentioned group of magnets zoarium (2).
3. by the described electromagnetic brake without excitating function of claim 1, it is characterized in that: replace above-mentioned rubber elastomer (5), rubber elastomer (15) is to be shaped as the hollow cone ring that section is a parallelogram; Periphery at wheel (26) is provided with the tapering (26b) of inclination, and this tapering (26b) reduced by the inside side's radius of axial foreign side, so as with the combining closely in interior week of above-mentioned ring-shaped rubber elastomer (15); Also be processed with slope hole (4b) in the interior week of above-mentioned armature (4), this taper hole (4b) has parallel with above-mentioned tapering (26b), and than the slightly little internal diameter of size that adds the thickness gained of rubber elastomer (15) by the external diameter of above-mentioned tapering (26b); Rubber elastomer (15) flexibly is fitted between the peripheral part of the interior perimembranous of armature (4) and wheel hub (26); Leave slightly axially arranged outside stepped part (26a) of armature (4) at wheel hub (26), the top of flange (12a) is withstood on the end face of armature (4), whereby disk-shaped part (12) is inserted, the outside in this disk-shaped part (12), to push the periphery that nut (11a) pushes wheel hub (26), armature (4) will be applied precompressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97102005 CN1162079A (en) | 1996-02-23 | 1997-01-08 | Electromagnetic brake without excitating function |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60268/96 | 1996-02-23 | ||
| CN 97102005 CN1162079A (en) | 1996-02-23 | 1997-01-08 | Electromagnetic brake without excitating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1162079A true CN1162079A (en) | 1997-10-15 |
Family
ID=5166104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97102005 Pending CN1162079A (en) | 1996-02-23 | 1997-01-08 | Electromagnetic brake without excitating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1162079A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378361C (en) * | 2004-08-19 | 2008-04-02 | 韩伍林 | Rapid brake opening device without remanent magnetism |
| CN102568741A (en) * | 2011-12-30 | 2012-07-11 | 成都威特电喷有限责任公司 | Quick electromagnet with armature ram |
| CN101189446B (en) * | 2005-06-02 | 2012-09-05 | 伊顿公司 | Electromagnetic brake for a multiple-ratio power transmission in a vehicle powertrain |
| CN111356856A (en) * | 2017-10-25 | 2020-06-30 | 华纳电子欧洲简易股份公司 | Step torque brake device |
-
1997
- 1997-01-08 CN CN 97102005 patent/CN1162079A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378361C (en) * | 2004-08-19 | 2008-04-02 | 韩伍林 | Rapid brake opening device without remanent magnetism |
| CN101189446B (en) * | 2005-06-02 | 2012-09-05 | 伊顿公司 | Electromagnetic brake for a multiple-ratio power transmission in a vehicle powertrain |
| CN102568741A (en) * | 2011-12-30 | 2012-07-11 | 成都威特电喷有限责任公司 | Quick electromagnet with armature ram |
| CN111356856A (en) * | 2017-10-25 | 2020-06-30 | 华纳电子欧洲简易股份公司 | Step torque brake device |
| CN111356856B (en) * | 2017-10-25 | 2021-10-29 | 华纳电子欧洲简易股份公司 | Step torque brake device |
| US11378145B2 (en) | 2017-10-25 | 2022-07-05 | Warner Electric Europe S.A.S. | Stepped torque braking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |