CN101210593A - Torque limiter - Google Patents
Torque limiter Download PDFInfo
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- CN101210593A CN101210593A CNA2006101479606A CN200610147960A CN101210593A CN 101210593 A CN101210593 A CN 101210593A CN A2006101479606 A CNA2006101479606 A CN A2006101479606A CN 200610147960 A CN200610147960 A CN 200610147960A CN 101210593 A CN101210593 A CN 101210593A
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- rotor
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- torque limiter
- wheel hub
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Abstract
The invention discloses a torque limiter which is arranged on a power transfer path between a first rotor and a second rotor. The torque limiter comprises a hub, a ring member and a compaction piece. The hub is arranged on the second rotor and has a ring of contact surface outside. The ring member comprises an inner ring and an outer ring, which are arranged concentrically, and a filler arranged between the inner ring and the outer ring. The inner ring is provided outside the hub and attached to a contact surface of the hub. The outer ring is connected with the first rotor. The compaction piece presses the inner ring on the contact surface of the hub. When the torque transferred between the press plate and the hub is beyond a predetermined torque, the inner ring moves relatively to the hub to produce frictional heat which further melts the filler, so that the first rotor and the second rotor are separated. The inventive torque limiter can not only prevent the rotor from being impacted by large torque rotor but also provide a buffer effect to reduce noise during the start-up process.
Description
Technical field
The present invention relates to a kind of torque transmitter, relate in particular to a kind of torque limiter that transmits with torque limiting.
Background technique
Torque limiter has the occasion of many application, for example is located on the power transfer path of motor car engine and air condition compressor.Typical externally controlled type variable compressor has a swash plate that is supported on obliquely on the main shaft, and the swash plate angle can change by the electrically-controlled valve of compressor.Break down when making moment of torsion become big when the inside of externally controlled type variable compressor, excessive moment of torsion can produce big impact to motor.Therefore, compressor must have overload protecting mechanism, and when making the moment of torsion of compressor inside excessive, compressor and belt pulley break away from, and avoids the excessive impact to motor of the inner moment of torsion of compressor.
Summary of the invention
Technical problem to be solved by this invention provides a kind of torque limiter with overload protection function; be placed on the power transfer path of first rotor and second rotor; when causing moment of torsion between the two to become big when breaking down; torque limiter can break away from the impact of avoiding excessive torque to cause automatically.
The present invention solves the problems of the technologies described above the technological scheme that adopts to provide a kind of torque limiter, comprises a wheel hub, a loop component and a compressing member; Wheel hub is located on second rotor, and wheel hub is provided with a circle surface of contact outward; Loop component comprises interior ring, the outer ring of concentric setting and is filled in packing material between the inside and outside ring, and it is outer and fit with the surface of contact of wheel hub that interior ring is located at wheel hub, and outer ring is connected with first rotor; Compressing member is pressed on interior ring on the surface of contact of wheel hub, and compresses degree by it and regulate disengaging moment of torsion between first rotor and second rotor; When the transmitting torque between first rotor and second rotor surpass to break away from moment of torsion, frictional heat made packing material at high temperature melt to interior ring with wheel hub generation relative movement, thereby makes the dockingundocking between first rotor and second rotor.
In the above-mentioned torque limiter, compressing member can comprise one press be located in pressing plate, on the ring press be located on the pressing plate elastic element and be sheathed on the wheel hub and compress the nut of elastic element.
In the above-mentioned torque limiter, described elastic element can be made of belleville spring or annular spring.
In the above-mentioned torque limiter, compressing member can comprise one press be located in pressing plate and on the ring with described pressing plate with the wheel hub riveted joint or be spirally connected to clamp the rivet or the screw of interior ring.
In the above-mentioned torque limiter, the molten temperature region of packing material, promptly in the interval difference of maximum temperature and minimum temperature less than 200 ℃.
In the above-mentioned torque limiter, the minimum melting point of packing material is higher than 200 ℃, and maximum melting point is lower than 800 ℃.
In the above-mentioned torque limiter, packing material is rubber or epoxy resin.
In the above-mentioned torque limiter, described in roughness coefficient Ra＞6.3 of ring.
In the above-mentioned torque limiter, the surface of interior ring is coated with friction material.
Above-mentioned torque limiter can be combined in motor car engine and the power transfer path that is used for automobile air conditioner compressor, and first rotor is the rotor that driven by motor car engine, and second rotor is the main shaft of automobile air conditioner compressor.
The present invention is owing to adopt technique scheme, and when causing two moments of torsion between the rotor to become big when breaking down, torque limiter can break away from the impact of avoiding excessive torque to cause automatically.In addition, the packing material of torque limiter can also play buffer function when starting, reduce noise.
Description of drawings
Further specify the features and advantages of the present invention below in conjunction with the drawings and specific embodiments, wherein:
Fig. 1 is the externally controlled type variable compressor sectional view that is provided with the torque limiter of first embodiment of the invention.
Fig. 2 is the sectional view of externally controlled type variable compressor that is provided with the torque limiter of second embodiment of the invention.
Fig. 3 is the structural representation of Fig. 1, loop component shown in Figure 2.
Embodiment
See also shown in Figure 1, the first embodiment of the present invention is to be combined in motor car engine and the power transfer path that is used for automobile air conditioner compressor, wherein the main shaft 2 as second rotor is a compressor main shaft, be located at protecgulum 1 central authorities of compressor 10, be fixed on the protecgulum 1 of compressor 10 as the belt pulley 3 of first rotor by belt pulley bearing 4.Belt pulley 3 links to each other by the belt pulley of motor on belt and the automobile.Torque limiter 5 is transmitting torque between belt pulley 3 and main shaft 2, and the concrete formation of torque limiter 5 is described below.
In the first embodiment of the present invention, torque limiter parts 5 comprise wheel hub 51, loop component 52 and a compressing member 53.Wherein wheel hub 51 is located on the main shaft 2 and the effect by a fastening piece 6 tightens together with main shaft 2 down, and wheel hub 51 is outer to be provided with one and to enclose surface of contact 510.Loop component 52 is made up of the outer ring 52a of concentric setting and the packing material 52b between interior ring 52c and inside and outside ring, and its structure as shown in Figure 3.Interior ring 52c plays the effect of friction plate in torque limiter 5, it is located at outside the wheel hub 51, and is pressed in by compressing member 53 on the surface of contact 510 of wheel hub 51.Compressing member 53 can be adjusted the interior impacting force of ring 52c on the surface of contact of wheel hub 51, thus the setting moment of torsion (breaking away from moment of torsion) when ring 52c and wheel hub 51 skid in regulating.Outer ring 52a tightens together with belt pulley 3 under the effect of another fastening piece 7.When the transmitting torque between belt pulley 3 and the main shaft 2 surpasses the disengaging moment of torsion, interior ring 52 produces relative movement with wheel hub 51, thereby frictional heat can make the surface temperature of loop component 52 raise rapidly, make packing material 52b at high temperature melt, thereby make the dockingundocking between belt pulley 3 and the main shaft 2.
The surface Machining of above-mentioned interior ring 52c requires more coarse (roughness requires Ra＞6.3), can spray friction material on the surface, this material uses wear-resisting property height, friction factor is big and stablize, the friction material of high temperature resistant, good heat conductivity (friction material commonly used as: 10# or 15# steel carburizing and quenching, 65Mn quenching, 35～45# steel, cast iron, asbestos organic friction material etc.).
In the first embodiment of the present invention, compressing member 53 plays the effect of fastening interior ring 52c and wheel hub 51.Compressing member 53 can comprise be pressed in the circle of one on ring 52c pressing plate 53a, one be pressed in elastic element 53b on the pressing plate 53a and one and be installed on the wheel hub 51 and the nut 53c of compression elastic element 53b.Elastic element 53b can be made of belleville spring (as shown in Figure 1) or annular spring.Pressing plate 53a tightly is pressed in interior ring 52c on the plane of wheel hub 51 under the effect of elastic element 53b and nut 53c.By the tight degree may command of getting rid of of adjusting nut 53c impacting force, thus the setting moment of torsion when ring 52c and wheel hub 51 skid in regulating.
Fig. 2 is the sectional view of the torque limiter of second embodiment of the invention.The second embodiment of the present invention also is to be combined in motor car engine and the power transfer path that is used for automobile air conditioner compressor, and its difference with first embodiment is to fix by compressing member 54 between the interior ring 52c and wheel hub 51 among second embodiment.Compressing member 54 comprises a pressing plate 54a and fastening rivet or screw 54b, pressing plate 54a is pressed in interior ring 52c on the plane of wheel hub 51, the size of the rivet force by rivet is controlled the size of impacting force, perhaps controls the size of impacting force by the size of getting rid of tight moment of torsion of screw.
Torque limiter of the present invention not only can be combined in motor car engine and be used for the power transfer path of automobile air conditioner compressor, also can be combined in motor and is used for oil hydraulic pump, the motor of car brakeing auxiliary device and is used for the oil hydraulic pump and the motor of power steering gear and is used between the air pump etc. of air suspension device.
Top description only is for principle of the present invention is described.In addition, to those skilled in the art, can be easy to carry out various modifications and modification, therefore, also do not wish to limit the invention in diagram described concrete structure of sharp literal and the application, all suitable distortion and equivalence are replaced and all are considered to drop in appended claims of the present invention and their the equivalent mode of execution scope.
Claims (10)
1. a torque limiter is placed on the power transfer path of first rotor and second rotor, it is characterized in that, described torque limiter comprises a wheel hub, a loop component and a compressing member; Described wheel hub is located on described second rotor, and wheel hub is provided with a circle surface of contact outward; Described loop component comprises interior ring, the outer ring of concentric setting and is filled in packing material between the inside and outside ring, described in ring to be located at described wheel hub outer and fit with contacting of wheel hub, described outer ring is connected with described first rotor; Described compressing member is pressed on ring in described on the surface of contact of described wheel hub, and compresses degree by it and regulate disengaging moment of torsion between described first rotor and second rotor;
When the transmitting torque between described first rotor and second rotor surpasses the disengaging moment of torsion, ring and wheel hub produce relative movement and frictional heat in described, make described packing material at high temperature melt, thereby make the dockingundocking between described first rotor and second rotor.
2. torque limiter as claimed in claim 1, it is characterized in that, described compressing member comprise one press be located at described in pressing plate, on the ring be located on the described pressing plate elastic element and be sheathed on the described wheel hub and compress the nut of described elastic element.
3. torque limiter as claimed in claim 2 is characterized in that, described elastic element is made of belleville spring or annular spring.
4. torque limiter as claimed in claim 1 is characterized in that, described compressing member comprise one press be located at described in pressing plate and on the ring with described pressing plate with the riveted joint of described wheel hub or be spirally connected to clamp the rivet or the screw of described interior ring.
5. torque limiter as claimed in claim 1 is characterized in that, the molten temperature region of described packing material is less than 200 ℃.
6. torque limiter as claimed in claim 1 is characterized in that, the minimum melting point of described packing material is higher than 200 ℃, and maximum melting point is lower than 800 ℃.
7. as claim 1 or 6 described torque limiters, it is characterized in that described packing material is rubber or epoxy resin.
8. torque limiter as claimed in claim 1 is characterized in that, roughness coefficient Ra＞6.3 of described interior ring.
9. as claim 1 or 8 described torque limiters, it is characterized in that the surface of described interior ring is coated with friction material.
10. torque limiter as claimed in claim 1 is characterized in that, described first rotor is the rotor that driven by motor car engine, and described second rotor is the main shaft of automobile air conditioner compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101479606A CN101210593A (en) | 2006-12-26 | 2006-12-26 | Torque limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101479606A CN101210593A (en) | 2006-12-26 | 2006-12-26 | Torque limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101210593A true CN101210593A (en) | 2008-07-02 |
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ID=39610805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101479606A Pending CN101210593A (en) | 2006-12-26 | 2006-12-26 | Torque limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101210593A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102089543A (en) * | 2008-07-08 | 2011-06-08 | 沃依特专利有限责任公司 | Closure with thermal safety function for a hydrodynamic machine |
| CN104863990A (en) * | 2015-05-28 | 2015-08-26 | 无锡创明传动工程有限公司 | Friction type torque limiting structure |
| CN113457828A (en) * | 2021-07-05 | 2021-10-01 | 利恩传动设备（常州）有限公司 | Torque limiter for crusher |
-
2006
- 2006-12-26 CN CNA2006101479606A patent/CN101210593A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102089543A (en) * | 2008-07-08 | 2011-06-08 | 沃依特专利有限责任公司 | Closure with thermal safety function for a hydrodynamic machine |
| CN104863990A (en) * | 2015-05-28 | 2015-08-26 | 无锡创明传动工程有限公司 | Friction type torque limiting structure |
| CN113457828A (en) * | 2021-07-05 | 2021-10-01 | 利恩传动设备（常州）有限公司 | Torque limiter for crusher |
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Application publication date: 20080702 |