CN108331852B - Switch water pump based on electromagnetic torsion spring clutch - Google Patents
Switch water pump based on electromagnetic torsion spring clutch Download PDFInfo
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- CN108331852B CN108331852B CN201710038390.5A CN201710038390A CN108331852B CN 108331852 B CN108331852 B CN 108331852B CN 201710038390 A CN201710038390 A CN 201710038390A CN 108331852 B CN108331852 B CN 108331852B
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- torsion spring
- electromagnetic
- clutch
- water pump
- iron core
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 92
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/14—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/106—Engine
Abstract
The invention relates to an electromagnetic torsion spring clutch, a switch water pump based on the electromagnetic torsion spring clutch and a vehicle, wherein the electromagnetic torsion spring clutch comprises a driving wheel assembly, a driven wheel assembly and an operating device, and the driving wheel assembly and the driven wheel assembly are connected through bearings and can rotate relatively; a friction sleeve is arranged outside a bracket in the driving wheel assembly and is tightly held with a spiral part of a torsion spring in the driven wheel assembly; the switch water pump comprises the electromagnetic torsion spring clutch, an iron core component and a pump body component; the power output part of the clutch component is controlled by the on and off of the coil to transmit the rotary motion to the impeller, so that the motion of the impeller is controlled. The invention realizes the aim of reducing the problem of too fast wear of the torsion spring and forms a device for controlling the operation of an engine cooling system according to the temperature of an automobile engine.
Description
Technical Field
The invention belongs to the technical field of vehicle-mounted water pumps of automobile engines, and particularly relates to a switch water pump based on an electromagnetic torsion spring type clutch.
Background
The vehicle-mounted water pump of the automobile engine is an important part of an engine cooling system, and the vehicle-mounted water pump of the automobile engine is used for pumping cooling liquid, so that the cooling liquid flows rapidly in a cooling water channel of the engine to take away heat generated during the working of a transmitter and keep the normal working temperature of the engine, and at present, the current situation of the vehicle-mounted water pump of the automobile engine is that a centrifugal water pump is widely adopted as a main part of forced circulation of the cooling system. The vehicle-mounted water pump of the automobile engine mainly uses a belt to drive a belt pulley, the belt pulley directly drives a water pump impeller to work, and the impeller enables cooling liquid to flow so as to dissipate heat of the engine.
The traditional automobile engine on-board water pump has certain defect, and the traditional automobile engine on-board water pump has no clutch control, and the automobile engine on-board water pump just starts working when the vehicle starts, but at the moment that the vehicle just starts starting, the automobile engine's temperature is lower, and the automobile engine on-board water pump starts working this moment, has seriously influenced the automobile engine temperature and has risen to suitable working range, makes the working property of automobile engine receive the influence of certain degree to cause the waste of certain degree of fuel, cause economic loss, so the current traditional automobile engine on-board water pump can not satisfy the energy-concerving and environment-protective requirement of advocating at present.
The patent document with the publication number of CN201502640U discloses an electromagnetic clutch of an automobile water pump, wherein an electromagnetic clutch device is added between an automobile water pump shaft and a water pump belt pulley, so that the transmission of torque of the water pump belt pulley to the automobile water pump shaft can be started or closed according to actual working conditions, the cooling balance of an engine can be realized, the energy consumption loss of the engine can be effectively reduced, and the energy conservation and emission reduction can be realized. However, the technical scheme has certain defects, and mainly uses the magnetic force of the permanent magnet to attract the driving disc assembly and the water pump belt pulley to realize torque transmission, wherein the magnetic force of the permanent magnet is parallel to the axial direction of the water pump shaft of the automobile, the torque of the water pump belt pulley for driving the water pump shaft of the automobile to rotate is the circumferential direction of the water pump shaft of the automobile, and the two forces are tangential, namely the technical scheme essentially uses the magnetic force of the permanent magnet to attract the friction force between the inner ring plate, the outer ring plate, the inner ring plate and the permanent magnet to realize torque transmission, and the friction force generated by the magnetic force of the permanent magnet is also certain, if the friction force generated by the magnetic force of the designed permanent magnet is enough to meet the torque when the water pump belt pulley rotates at the maximum speed, the generated impact force is very large, and the service life of the product is influenced; if the torque of the water pump belt pulley during the maximum rotation speed cannot be met, the rotation speed of the water pump belt pulley and the rotation speed of the automobile water pump shaft have a speed difference, relative sliding can be generated between the water pump belt pulley and the automobile water pump shaft, the water pump belt pulley is worn quickly, and the service life of the water pump is influenced.
The patent document with publication number of CN103711564A discloses an adjustable-speed water pump, and proposes a method for utilizing a torsion spring arranged between a belt pulley and a driven shaft, and utilizing the locking and releasing of the torsion spring to transmit the power of a gear train, so that the problems in the patent document with publication number of CN201502640U are solved. However, the axial pin of the torsion spring needs to pass through the arc-shaped long slot hole arranged on the side wall of the driven shaft and then stretches into the groove arranged on the suction disc, and the arc-shaped long slot hole provides a sufficient moving range for the axial pin of the torsion spring, so that certain defects still exist: under abnormal working conditions, if the rotation angle of the driven shaft is larger than the degree of the arc-shaped long slot hole, interference between the driven shaft and the action of the torsion spring is caused, the normal working of the speed-adjustable water pump is influenced by a light person, and the speed-adjustable water pump is directly scrapped by a heavy person, so that the normal operation of a vehicle is influenced, and the reliability is insufficient; on the other hand, the structure is complex and the manufacturing cost is high.
The patent document with publication number of CN203770462U discloses a torsion spring type electromagnetic clutch, wherein a torsion spring is positioned in an attraction disc sleeve and outside a driven wheel sleeve, two free ends of the torsion spring respectively lead out a first pin and a second pin, the inner diameter of the torsion spring is larger than the outer diameter of the driven wheel sleeve in a free state, the first pin stretches into an attraction disc notch, and the second pin stretches into a driven wheel notch. The problem of the interference of driven shaft and torsional spring action in the patent document of publication No. CN103711564A is solved, the reliability is higher, the service life is longer, the installation is more convenient, the structure is simpler, and the cost is lower. However, the electromagnetic clutch has certain defects, impact force damages the torsion spring under the condition that the belt pulley drives the attraction disc to rotate at a high rotating speed, and meanwhile, the friction between all parts in contact with the torsion spring in the electromagnetic clutch makes the torsion spring excessively fast friction, so that the service life of the electromagnetic clutch is still influenced.
In summary, in the prior art, there is no effective solution for the problem of how to design the vehicle-mounted water pump of the automobile engine to select a proper on time according to the working temperature of the engine, and the problem of too fast wear of the torsion spring in the torsion spring type electromagnetic clutch for controlling the opening of the vehicle-mounted water pump of the automobile engine.
Disclosure of Invention
The invention provides an electromagnetic torsion spring type clutch, which aims to solve the problem that torsion springs in torsion spring type electromagnetic clutches in the prior art are worn too fast.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the electromagnetic torsion spring clutch comprises a driving wheel assembly, a driven wheel assembly and an operating device, wherein the driving wheel assembly and the driven wheel assembly are connected through a bearing and can rotate relatively to each other;
the driving wheel assembly comprises a belt pulley and a bracket, the belt pulley is connected with the bracket, and a bearing is arranged in the bracket; a friction sleeve is arranged outside the bracket;
the driven wheel assembly comprises a driven shaft, a torsion spring and a torsion spring sheath, the bearing is connected with the driven shaft, and the driven shaft is respectively connected with the torsion spring and the torsion spring sheath; the torsion spring comprises a driving pin, a driven pin and a spiral part, the spiral part is respectively connected with the driving pin and the driven pin, the driving pin is connected with the operating device, the driven pin is fixed on the driven shaft, and the other end of the friction sleeve is arranged in the spiral part; when the torsion spring is in a free state, the spiral part is in contact with the torsion spring sheath and the driven shaft, and when the torsion spring is in a working state, the spiral part is screwed up and is tightly held with a friction sleeve arranged outside the bracket;
The operating device comprises a suction disc, a torsion spring operating block, a spring piece and a spring piece locating sleeve, wherein a driving pin of the torsion spring extends into the torsion spring operating block, the torsion spring operating block is connected with the suction disc, the suction disc is attached to a support through the spring piece, the spring piece is fixedly connected with the spring piece locating sleeve through a check ring, the outer circle of the spring piece is connected with the suction disc, and an inner hole is connected with the spring piece locating sleeve.
The electromagnetic torsion spring type clutch has the effect of effectively slowing down the abrasion of the torsion spring. In the electromagnetic torsion spring clutch, the power transmission in the driving wheel assembly and the driven wheel assembly are realized through torsion spring tightening, a friction sleeve with small friction coefficient and wear resistance is arranged between the torsion spring and the support, the friction sleeve can enable the torsion spring to generate slipping due to the small friction coefficient at the moment of starting to work when the support is just tightened, huge impact force is effectively reduced between the torsion spring and the support at a high speed rotation speed, damage of the instant impact force to driving pins of the torsion spring is reduced, and meanwhile, the friction sleeve is made of a material with good wear resistance material and can reduce excessively rapid wear of the torsion spring caused by the instant of torsion spring tightening and severe friction generated by the support.
Further, a friction material is arranged on the suction disc, and the friction material is positioned on one side, where the suction disc is attached to the support of the driving wheel assembly; when the electromagnetic torsion spring clutch works, the end face of the bracket is contacted with an attracting disc with friction materials pressed in the operating device. The friction material arranged on the suction disc enables the loss of the suction disc and the support during power transmission to be reduced when the suction disc is in compression contact with the support, and meanwhile abrasion during connection between the suction disc and the support is avoided due to the arrangement of the friction material.
Further, the engaging plate and the bracket may be treated by a coating or heat treatment method to replace the friction material provided on the engaging plate. The effect of the friction materials arranged on the sucking disc and the bracket, which are replaced by the sucking disc and the bracket in a coating or heat treatment mode, is the same, so that the loss of the sucking disc and the bracket in the process of power transmission is reduced when the sucking disc and the bracket are in compression contact, and the abrasion of the sucking disc and the bracket in the process of connection is avoided.
Further, the cross section of the spiral part of the torsion spring is in an equal diameter shape or a variable diameter shape. The spiral part of the torsion spring adopts an equal-diameter spiral or a variable-diameter spiral, and the effect realized by the invention is not affected.
Further, the number of turns of the spiral part of the torsion spring is 4-7. In the invention, the number of turns of the spiral part of the torsion spring is set to be between 4 turns and 7 turns, and the number of turns comprises 4 turns and 7 turns, so that the torsion force of the torsion spring can enable the torsion spring to tightly hold a friction sleeve on a bracket in the driving wheel assembly when the torsion spring is in a torsion state, and a driven pin of the torsion spring is fixed on a driven shaft in the driven wheel assembly, so that power in the driving wheel assembly is transmitted to the driven wheel assembly.
Furthermore, the driving pin of the torsion spring adopts a straight-edge structure or a bent-edge structure. The driving pin of the torsion spring extends into the torsion spring operating block of the operating device, and the driving pin of the torsion spring adopts a straight-edge structure or a bent-edge structure to enable the driving pin of the torsion spring to be fixedly connected with the torsion spring operating block of the operating device.
Further, the driven pin of the torsion spring is fixed between the driven shaft and the torsion spring sheath, and the driven shaft and the torsion spring sheath are fixed in an interference fit, threaded connection, welding or riveting mode. The electromagnetic torsion spring type clutch operating device has the advantages that the effect that the driven shaft and the torsion spring sheath are still in a fixed connection state when the torsion spring is in a torsion state is met, in the electromagnetic torsion spring type clutch operating device, the extraction force of the driven shaft and the torsion spring sheath after being fixedly connected is larger than the force transmitted in the torsion spring torsion state, and the driven shaft and the torsion spring sheath are still in the fixed connection state when the torsion spring is in the torsion state.
Further, the driven pin of the torsion spring adopts a hook-shaped structure or a bent structure. The driven pin of the torsion spring is fixed between the driven shaft and the torsion spring sheath, and adopts a hook structure or a bent structure, which has the function of transmitting the force in the driving wheel assembly to the driven shaft in the driven wheel assembly through the torsion spring.
Further, the outer surface of the bracket may be provided with a coating instead of the friction sleeve mounted outside the bracket, or the bracket may be heat treated instead of the friction sleeve mounted outside the bracket. The coating arranged on the outer surface of the bracket is the same as the friction sleeve arranged outside the bracket instead of the bracket, the bracket after heat treatment is the same as the bracket instead of the friction sleeve, so that the torsion spring can slip due to small friction coefficient when the bracket is just twisted, huge impact force is effectively reduced between the torsion spring and the bracket at high speed rotation speed, damage of the instant impact force to the driving pin of the torsion spring is reduced, and meanwhile, the friction sleeve is made of a material with good wear-resistant material, so that the excessive rapid abrasion of the torsion spring caused by the instant twisting of the torsion spring and the severe friction generated by the bracket can be reduced.
Further, a boss is arranged inside one end of the torsion spring sheath, which is close to the driving pin of the torsion spring, and the boss arranged on the torsion spring sheath limits the axial position of the torsion spring, so that the axial movement of the torsion spring is prevented from being excessively large and interfering with other parts.
Further, the outer surface of the torsion spring is provided with a wear-resistant coating, and the wear-resistant coating outside the torsion spring reduces the wear between the torsion spring and the driven shaft and the torsion spring sheath.
Further, the connection and fixation mode between the torsion spring operating block and the attraction disc is interference fit or interference fit and riveting are combined, the shaft diameter of the torsion spring operating block matched with the attraction disc is larger than the aperture of a groove connected with the torsion spring operating block, the torsion spring operating block is extruded into the attraction disc by a special tool, or the groove connected with the torsion spring operating block is heated by utilizing the characteristic of thermal expansion and cold contraction, the aperture is enlarged and rapidly sleeved on the torsion spring operating block, and two parts are tightly matched into a whole after cooling and shrinking, or the torsion spring operating block is placed in dry ice for cooling and then connected with the attraction disc; the torsion spring operating block is riveted with the suction disc after being in interference fit. Or the torsion spring operating block is directly connected with the suction disc in a riveting or welding mode. The electromagnetic torsion spring type clutch actuating device has the effect that the torsion spring actuating block and the attraction disc are still in a fixed connection state when the torsion spring is in a torsion state, in the electromagnetic torsion spring type clutch actuating device, the pull-out force of the torsion spring actuating block and the attraction disc after being fixedly connected is larger than the force transmitted in the torsion spring torsion state, and the torsion spring actuating block and the attraction disc are still in a fixed connection state when the torsion spring is in the torsion state.
Further, in the operating device, the attraction disc and the torsion spring operating block may be integrally formed. The electromagnetic torsion spring clutch actuating device has the effect that the torsion spring actuating block and the attraction disc are still in a fixed connection state when the torsion spring is in a torsion state, and in the electromagnetic torsion spring clutch actuating device, the attraction disc and the torsion spring actuating block adopt an integrated workpiece, so that the extraction force of the torsion spring actuating block after being fixedly connected with the attraction disc is larger than the force transmitted in the torsion spring torsion state, and the torsion spring actuating block and the attraction disc are still in a fixed connection state when the torsion spring is in the torsion state.
Further, the outer circle of the spring piece is connected with the suction disc, and the fixed connection mode between the spring piece and the suction disc adopts interference fit, welding, riveting or punching. The spring piece and the attraction disc are still in a fixed connection state when the spring piece bears the elastic force after the maximum deformation, in the operating device of the electromagnetic torsion spring type clutch, the extraction force after the fixed connection of the spring piece and the attraction disc is larger than the elastic force after the spring piece bears the elastic force after the maximum deformation, and the spring piece and the attraction disc are still in a fixed connection state when the spring piece bears the elastic force after the maximum deformation.
Further, the inner hole of the spring piece is connected with the spring piece locating sleeve, the spring piece is connected with the spring piece locating sleeve through the check ring, the spring piece locating sleeve is of an L-shaped structure, one side of the spring piece is contacted with the spring piece locating sleeve, the other side of the spring piece is contacted with the check ring, and the check ring is connected with the spring piece locating sleeve. The spring piece and the spring piece locating sleeve are connected and fixed in a riveting, welding or interference fit mode. The spring piece positioning sleeve and the check ring effectively fix the spring piece when the spring piece bears the elastic force after the maximum deformation, and in the operating device of the electromagnetic torsion spring type clutch, the pull-out force after the spring piece is fixedly connected with the spring piece positioning sleeve is larger than the elastic force after the spring piece bears the elastic force after the maximum deformation, and the spring piece positioning sleeve and the check ring effectively fix the spring piece when the spring piece bears the elastic force after the maximum deformation.
The invention provides a switch water pump based on an electromagnetic torsion spring type clutch, which aims to solve the problem that a vehicle-mounted water pump of an automobile engine in the prior art cannot well select proper opening time according to the working temperature condition of the engine.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a switch water pump based on electromagnetic torsion spring clutch comprises the electromagnetic torsion spring clutch, an iron core component and a pump body component; the pump body component is connected with the electromagnetic torsion spring type clutch and the iron core component respectively;
the pump body component comprises a shell, an impeller, a shaft, a limiting block, a water seal and a cushion block, wherein the impeller, the shaft, the limiting block, the water seal and the cushion block are arranged in the shell, the shaft is arranged in the shell, the limiting block is arranged on the shaft, the shaft is sequentially connected with the water seal and the impeller, the impeller and the shell perform relative motion, the pump body component is connected with the electromagnetic torsion spring type clutch through the limiting block, and an operating device in the electromagnetic torsion spring type clutch is connected with the limiting block; the pump body component is connected with the iron core component through a cushion block;
the iron core assembly comprises an iron core and a coil, the iron core is fixedly connected with the outside of the shell, the attraction disc is arranged at the position corresponding to the iron core in the electromagnetic torsion spring type clutch, the coil is arranged inside the iron core, and the iron core is close to the end face of one side of the attraction disc and is provided with the cushion block.
The switch water pump based on the electromagnetic torsion spring clutch controls the electromagnetic torsion spring clutch to control the pump body assembly to work in a mode of electrifying and de-electrifying the coil in the iron core assembly, and can select proper opening time and proper working time according to different temperature conditions of an engine during working, so that the condition that the common vehicle-mounted water pump enters a working state at the beginning to influence the temperature rise time of the engine, thereby influencing the power output of the engine and further causing unnecessary fuel waste working modes is avoided, and the effects of reducing the fuel waste of a vehicle, saving energy and protecting environment are achieved.
Further, the iron core assembly is controlled by PWM, the iron core assembly has two different working voltages, the coil is powered by high voltage based on the moment when the switch water pump of the electromagnetic torsion spring clutch starts working, so that the state that the attraction force between the iron core assembly and the attraction disc is insufficient is overcome, and after the iron core assembly and the attraction disc are attracted, the coil is powered by low voltage, and the attraction state between the iron core assembly and the attraction disc is maintained.
Further, the spring piece in the operating device is connected with the limiting block through the spring piece locating sleeve, and the spring piece locating sleeve circumferentially rotates relative to the limiting block.
Furthermore, the spring piece locating sleeve and the limiting block are made of steel materials, rubber materials or powder metallurgy materials. The powder metallurgy friction material, also called as a sintering friction material, consists of three parts, namely a base metal (copper, iron or other alloys), a lubricating component (lead, graphite, molybdenum disulfide and the like) and a friction component (silicon dioxide, asbestos and the like), and has high friction coefficient, can quickly absorb kinetic energy, and has high braking and transmission speeds and small abrasion; the strength is high, high temperature resistance and good thermal conductivity are achieved; has good seizure resistance, corrosion resistance and little influence of grease and humidity.
Further, the cushion block adopts square, round, oval or triangle, when the coil is electrified, a magnetic field is generated, the iron core component attracts the attraction disc, and the iron core is close to the cushion block arranged on one side end face of the attraction disc, so that friction between the iron core and the attraction disc is effectively reduced.
Further, a coating layer may be disposed on the outer surface of the engaging plate or the iron core to replace the pad, or the engaging plate or the iron core may be heat treated to achieve an antifriction effect to replace the pad. The coating outside the attraction disc or the iron core or the effect of the heat-treated attraction disc or the heat-treated iron core is the same as that of the cushion block arranged on the iron core replaced by the attraction disc or the heat-treated iron core, so that friction between the iron core and the attraction disc is effectively reduced.
Further, the cushion block is arranged on the outer ring, the inner ring or the end face of the iron core, or the cushion block is arranged on the suction disc. The positions of the cushion blocks can be arranged at different positions of the iron core or the attraction disc, and the sizes of the cushion blocks are different according to the positions of the cushion blocks. The friction effect between the iron core and the suction disc is effectively reduced;
furthermore, the connection and fixation modes between the cushion block and the iron core or between the cushion block and the suction disc are interference fit, threaded connection, welding or riveting.
The invention provides a transportation tool for solving the problem that an on-board water pump of an automobile engine in the prior art cannot well select proper opening time according to the working temperature condition of the engine.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a vehicle having an engine and a cooling unit for dissipating heat from the engine, the cooling unit comprising a water pump; the water pump adopts the switch water pump based on the electromagnetic torsion spring type clutch.
The working principle of the invention is as follows:
when the automobile engine is too high in temperature and needs to be cooled by a cooling unit, a coil in a switch water pump based on an electromagnetic torsion spring clutch is not electrified, a belt pulley in a driving wheel assembly transmits motion to a support in the driving wheel assembly, a friction sleeve is arranged at the outer circle of an inner ring of the support, the end face of the support is contacted with an actuation disc with friction materials pressed in an operating device, the actuation disc is pressed on the support by axial force generated by deformation of a spring piece and can transmit motion, an active pin of the torsion spring extends in a torsion spring operating block synchronously moving with the actuation disc, the active pin of the torsion spring drives the torsion spring to rotate, the diameter of the torsion spring is reduced after rotation, at the moment, a spiral part of the torsion spring is tightly held with the friction sleeve on the support to start transmitting power from a driving wheel assembly, a driven pin of the torsion spring is connected with a driven shaft in the driven wheel assembly, the driven shaft is arranged at one end of the shaft, and the other end of the shaft is provided with an impeller, and finally the power of the belt pulley sequentially passes through the support, the torsion spring and a driven shaft to realize rotation of the impeller.
According to the operating device of the clutch component, the torsion spring operating block is riveted with the attraction disc after being in interference fit, or is riveted, welded and the spring piece is riveted with the attraction disc, wherein the pulling-out force of the torsion spring operating block and the attraction disc after being fixed is required to be larger than the force transmitted when the torsion spring is twisted, and the pulling-out force of the spring piece and the attraction disc after being fixed is higher than the elastic force of the spring piece after being subjected to maximum deformation.
The electromagnetic torsion spring clutch transmits power to the driven shaft through torsion spring tightening, and the friction sleeve with small friction coefficient and wear resistance is arranged between the torsion spring and the support, so that the torsion spring can slip due to the small friction coefficient at the moment when the support starts to work just after being tightened, the damage of instant impact force to the driving pin of the torsion spring is reduced, and meanwhile, the material with good wear resistance can be selected to reduce the excessively rapid wear caused by the moment when the torsion spring is tightened and the intense friction generated by the support.
When the switch water pump based on the electromagnetic torsion spring clutch works, the attraction disc is pressed on the support through the axial force generated by the deformation of the spring piece, when the temperature of the automobile engine is normal and the cooling unit is not required to cool the automobile engine, the coil is electrified, the coil in the iron core generates magnetic force to enable the attraction disc arranged at the corresponding position of the iron core to be attracted by the electromagnetic field, the elastic force of the spring piece is overcome to generate axial displacement, the attraction disc is separated from the support at the moment, the power transmission is interrupted, the support starts to idle, and the impeller stops rotating, so that the switch water pump based on the electromagnetic torsion spring clutch stops working.
The invention relates to an iron core component in a switch water pump based on an electromagnetic torsion spring clutch, wherein the iron core is controlled by PWM (pulse-width modulation), the iron core has two different working voltages, high-voltage actuation is adopted at the moment of starting working so as to overcome the state of insufficient actuation force, and the actuation state is kept by adopting low voltage after actuation.
When the temperature of the automobile engine is too high and the cooling unit is needed to cool the automobile engine, the coil is powered off, the attraction disc is compressed with the support again under the action of the elastic force of the spring piece, power is transmitted to the impeller, and the switch water pump based on the electromagnetic torsion spring type clutch starts to work to cool the automobile transmitter. The coil is electrified and powered off to control the water pump to work, so that the engine can work at proper temperature all the time.
The switch water pump based on the electromagnetic torsion spring clutch controls the work of the water pump in a mode of electrifying and de-electrifying the coil, can select proper starting time and proper working time according to different temperature conditions when the engine works, avoids the condition that the engine temperature rise time is influenced like a common vehicle-mounted water pump which is started to enter a working state, and further influences the output of engine power, thereby further causing an unnecessary fuel waste working mode, and further achieves the effects of reducing the fuel waste of the vehicle, saving energy and protecting environment.
Compared with the prior art, the invention has the beneficial effects that:
1. the electromagnetic torsion spring clutch transmits power to the driven shaft through torsion spring torsion, and the friction sleeve with small friction coefficient and wear resistance is arranged between the torsion spring and the support, so that the torsion spring can slip due to the small friction coefficient at the moment when the support just torsion starts to work, the damage of instant impact force to the driving pin of the torsion spring is reduced, and meanwhile, the material with good wear resistance is selected, so that the excessively rapid wear caused by the moment of torsion spring torsion and the severe friction generated by the support can be relieved.
2. The switch water pump based on the electromagnetic torsion spring clutch controls the work of the water pump in a mode of electrifying and de-electrifying the coil, can select proper starting time and proper working time according to different temperature conditions when the engine works, avoids the condition that the engine temperature rise time is influenced like a common vehicle-mounted water pump which is started to enter a working state, and further influences the output of engine power, thereby further causing an unnecessary fuel waste working mode, and further achieves the effects of reducing the fuel waste of the vehicle, saving energy and protecting environment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
FIG. 1 is a schematic diagram of the overall structure of a switching water pump of the present invention;
FIG. 2 is a schematic diagram of the switch water pump control device of the present invention;
FIG. 3 is a schematic view showing the structure of a switching pump suction tray of the present invention;
FIG. 4 is a schematic view of another operating device of the switch water pump of the present invention;
FIG. 5 is a schematic view of another suction disc of the switch water pump of the present invention;
FIG. 6 is a schematic view of a switch water pump bracket and friction sleeve assembly of the present invention;
FIG. 7 is a schematic view of a switch water pump bracket of the present invention;
FIG. 8 is a view of another core assembly of the friction plate of the present invention positioned on the end face of the core;
FIG. 9 is a view of another core assembly of the spacer of the present invention at the core outer ring;
the device comprises a 1-impeller, a 2-belt pulley, a 3-support, a 4-torsion spring operating block, a 5-torsion spring, a 6-torsion spring sheath, a 7-driven shaft, an 8-friction sleeve, a 9-bearing, a 10-spring piece, an 11-suction disc, a 12-spring piece positioning sleeve, a 13-shaft, a 14-shell, a 15-limiting block, a 16-retainer ring, a 17-water seal, a 18-cushion block, a 19-coil and a 20-iron core.
The specific embodiment is as follows:
it should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Embodiments and features of embodiments in this application may be combined with each other without conflict. The invention will be further described with reference to the drawings and examples.
Example 1:
as described in the background art, the abrasion problem in the torsion spring type electromagnetic clutch in the prior art is solved, and in order to solve the technical problem as described above, the application provides an electromagnetic torsion spring type clutch.
In an exemplary embodiment of the present application, as shown in fig. 1, an electromagnetic torsion spring clutch is provided, where the electromagnetic torsion spring clutch includes a driving wheel assembly, a driven wheel assembly, and an operating device, where the driving wheel assembly and the driven wheel assembly are connected through bearings and can rotate relatively to each other;
The driving wheel assembly comprises a belt pulley 2 and a bracket 3, the belt pulley 2 is connected with the bracket 3, and a bearing 9 is arranged in the bracket 3; a friction sleeve 8 is arranged outside the bracket 3;
the driven wheel assembly comprises a driven shaft 7, a torsion spring 5 and a torsion spring sheath 6, the bearing 9 is connected with the driven shaft 7, and the driven shaft 7 is respectively connected with the torsion spring 5 and the torsion spring sheath 6; the torsion spring 5 comprises a driving pin, a driven pin and a spiral part, wherein the spiral part is respectively connected with the driving pin and the driven pin, the driving pin is connected with the operating device, a boss is arranged inside one end of the torsion spring sheath 6, which is close to the driving pin of the torsion spring 5, the driven pin is fixed on the driven shaft 7, in the embodiment, the driven pin of the torsion spring 5 is fixed between the driven shaft 7 and the torsion spring sheath 6, the fixing modes of the driven shaft 7 and the torsion spring sheath 6 are interference fit, and in the invention, the fixing modes such as threaded connection, welding or riveting can be selected between the driven shaft 7 and the torsion spring sheath 6. The other end of the friction sleeve 8 is arranged inside the spiral part; when the torsion spring 5 is in a free state, the spiral part is in contact with the torsion spring sheath 6 and the driven shaft 7, and when the torsion spring 5 is in a working state, the spiral part is screwed up and is tightly held with the friction sleeve 8 arranged outside the bracket 3.
In this embodiment, the spiral portion of the torsion spring 5 adopts an equal diameter spiral with 6 turns, but the present invention is not limited to adopting an equal diameter spiral for the spiral portion of the torsion spring 5, and the spiral portion of the torsion spring 5 may also adopt a variable diameter spiral, where in the present invention, the spiral portion of the torsion spring 5 is an equal diameter spiral or a variable diameter spiral, which does not affect the effect achieved by the present invention. In this embodiment, the equal diameter spiral with 6 turns for the spiral part of the torsion spring 5 is only a preferred example, and the technical effect of the present invention can be achieved by using 4-7 turns for the spiral part of the torsion spring 5 in the present invention. In this embodiment, the driving pin of the torsion spring 5 adopts a straight-edge structure, but the invention is not limited to the straight-edge structure of the driving pin of the torsion spring 5, and the driving pin of the torsion spring 5 can also adopt a curved structure, and in the invention, the straight-edge structure or the curved structure of the driving pin of the torsion spring 5 does not affect the effect achieved by the invention. In this embodiment, the driven pin of the torsion spring 5 adopts a hook structure, but the invention is not limited to the driven pin of the torsion spring 5 adopting a hook structure, and the driven pin of the torsion spring 5 can also adopt a curved structure, in which the driven pin of the torsion spring 5 adopts a hook structure or a curved structure, which does not affect the effect achieved by the invention.
As shown in fig. 2, the operating device comprises an engaging plate 11, a torsion spring operating block 4, a spring piece 10 and a spring piece positioning sleeve 12, wherein a driving pin of the torsion spring 5 extends into the torsion spring operating block 4, the torsion spring operating block 4 is connected with the engaging plate 11, the engaging plate 11 enables a friction material part of the engaging plate 11 to be attached to the bracket 3 through the spring piece 10, the spring piece 10 is fixedly connected with the spring piece positioning sleeve 12 through a check ring 16, the outer circle of the spring piece 10 is connected with the engaging plate 11, and an inner hole of the spring piece 10 is connected with the spring piece positioning sleeve 12. The construction of the actuation disc 11 is shown in fig. 3. The actuation disc 11 includes big ring and little ring, and the inner ring of big ring is connected with the outer loop of little ring, and little ring thickness is greater than big ring, evenly set up 6 through-holes on the big ring, little ring is being close to big ring department and is setting up an arc wall, evenly set up 3 bosss on the little ring.
The suction disc 11 is provided with a friction material, and the friction material is positioned on one side of the suction disc 11, which is attached to the support 3 of the driving wheel assembly; when the electromagnetic torsion spring clutch works, the end face of the bracket 3 is contacted with an attracting disc 11 with friction materials pressed in an operating device. The spring plate 10 and the engaging plate 11 are fixed by interference fit, and in the invention, the spring plate 10 and the engaging plate 11 can be fixed by welding or riveting.
The electromagnetic torsion spring type clutch has the effect of effectively slowing down the abrasion of the torsion spring. In the electromagnetic torsion spring clutch, the power transmission in the driving wheel assembly and the driven wheel assembly are realized through the torsion of the torsion spring 5, and the friction sleeve 8 with small friction coefficient and wear resistance is arranged between the torsion spring 5 and the bracket 3, the friction sleeve 8 can enable the torsion spring to generate slipping due to the small friction coefficient at the moment when the torsion spring just turns to the bracket 3 to start working, and under high rotating speed, huge impact force is effectively reduced between the driving pin of the torsion spring and the torsion spring operating block, the damage of the instant impact force to the driving pin of the torsion spring 3 is reduced, and meanwhile, the friction sleeve 8 is made of a material with good wear resistance, so that the excessive rapid wear of the torsion spring 5 caused by the instant torsion of the torsion spring 5 and the severe friction generated by the bracket can be reduced.
Example 2:
as described in the background art, the problem that the on-board water pump of the automobile engine cannot well select proper opening time according to the working temperature condition of the engine exists in the prior art, and in order to solve the technical problem, the application provides a switch water pump based on an electromagnetic torsion spring clutch, as shown in fig. 1, the switch water pump comprises the electromagnetic torsion spring clutch, an iron core component and a pump body component; the pump body component is connected with the electromagnetic torsion spring type clutch and the iron core component respectively;
The pump body assembly comprises a shell 14, an impeller 1, a shaft 13, a limiting block 15, a water seal 17 and a cushion block 18, wherein the impeller 1, the shaft 13, the limiting block 15, the water seal 17 and the cushion block 18 are arranged in the shell 14, the shaft 13 is arranged in the shell 14, in the embodiment, the shaft 13 is a shaft connecting bearing, an inner hole of a driven shaft 7 of an electromagnetic torsion spring type clutch is arranged on the shaft 13, the limiting block 15 is arranged on the shaft 13, the shaft 13 is sequentially connected with the water seal 17 and the impeller 1, the impeller 1 and the shell 14 perform relative motion, the pump body assembly is connected with the electromagnetic torsion spring type clutch through the limiting block 15, and a spring piece positioning sleeve 12 in the electromagnetic torsion spring type clutch is connected with the limiting block 15; the pump body assembly is connected with the iron core assembly through a cushion block 18;
the iron core assembly comprises an iron core 20 and a coil 19, the iron core 20 is fixedly connected with the outside of the shell 14, the attraction disc 11 is arranged at the position corresponding to the iron core 20 in the electromagnetic torsion spring type clutch, the coil 19 is arranged inside the iron core 20, the cushion block 18 is arranged on the end face of one side of the iron core 20, which is close to the attraction disc 11, and the cushion block 18 is arranged at the inner ring of the iron core.
The switch water pump based on the electromagnetic torsion spring clutch controls the electromagnetic torsion spring clutch to control the pump body assembly to work through the way of electrifying and cutting off the coil 19 in the iron core assembly, and can select proper opening time and proper working time according to different temperature conditions when the engine works, so that the condition that the engine temperature rise time is influenced when the engine enters the working state at the beginning like a common vehicle-mounted water pump is avoided, the output of engine power is influenced, and further, the unnecessary fuel waste working mode is caused, and the effects of reducing the vehicle fuel waste, saving energy and protecting environment are achieved.
The iron core assembly is controlled by PWM, the iron core assembly has two different working voltages, the coil 19 is powered by high voltage at the moment when the switch water pump based on the electromagnetic torsion spring clutch starts working, so as to overcome the state that the attraction force between the iron core assembly and the attraction disc 11 is insufficient, and after the iron core assembly and the attraction disc 11 are attracted, the coil 19 is powered by low voltage, so that the attraction state between the iron core assembly and the attraction disc 11 is maintained.
The spring piece 10 in the operating device is connected with the limiting block 15 through the spring piece positioning sleeve 12, and the spring piece positioning sleeve 12 performs circumferential rotation relative to the limiting block 15.
The spring piece positioning sleeve 12 and the limiting block 15 are made of powder metallurgy friction materials, also called sintering friction materials, and are composed of three parts, namely base metal (copper, iron or other alloys), lubricating components (lead, graphite, molybdenum disulfide and the like) and friction components (silicon dioxide, asbestos and the like), wherein the powder metallurgy friction materials are high in friction coefficient, can quickly absorb kinetic energy, and are high in braking and driving speed and small in abrasion; the strength is high, high temperature resistance and good thermal conductivity are achieved; has good seizure resistance, corrosion resistance and little influence of grease and humidity. Although the spring piece positioning sleeve 12 and the stopper 15 are made of powder metallurgy friction materials in the present embodiment, the materials used for the spring piece positioning sleeve 12 and the stopper 15 in the present invention are not limited to powder metallurgy friction materials, and steel materials or rubber materials may be used.
In this embodiment, the pad 18 is square, but the shape of the pad 18 in the present invention is not limited, and may be circular, oval or triangular, etc., so that when the coil is energized, a magnetic field is generated, the iron core assembly attracts the attraction disc, and the pad disposed on the end surface of the iron core near one side of the attraction disc effectively reduces friction between the iron core and the attraction disc. In addition, the anti-friction arrangement between the engaging plate and the iron core in the present invention is not limited to the arrangement of the spacer 18, and the engaging plate or the iron core may be provided with a coating instead of the spacer, or the engaging plate or the iron core may be subjected to heat treatment to achieve an antifriction effect instead of the spacer. The coating outside the attraction disc or the iron core or the effect of the heat-treated attraction disc or the heat-treated iron core is the same as that of the cushion block arranged on the iron core replaced by the attraction disc or the heat-treated iron core, so that friction between the iron core and the attraction disc is effectively reduced.
The connection fixing mode between the cushion block 18 and the iron core 20 is interference fit. In the present invention, the connection and fixation between the pad 18 and the core 20 are not limited to interference fit, and the connection, welding or riveting, etc. between the pad 18 and the core 20 may be selected.
In the working process of the switch water pump based on the electromagnetic torsion spring clutch, the belt pulley 2 transmits motion to the bracket 3, a bearing 9 is arranged on the wall of the inner ring of the bracket 3, a friction sleeve 8 is arranged at the outer circle of the inner ring of the bracket 3, an inner hole of the bearing 9 is arranged on the driven shaft 7, a driven pin of the torsion spring 5 is arranged at the outer circle of the driven shaft 7, a torsion spring sheath 6, a spiral part of the torsion spring 5 abuts against the torsion spring sheath 6 and the driven shaft 7, a driving pin of the torsion spring 5 extends into a torsion spring operating block 4 in an operating device, the torsion spring operating block 4 is in interference fit with the engaging disc 11, a spring piece 10 is riveted with the engaging disc 11, the inner hole of the spring piece 10 is connected with a spring piece positioning sleeve 12 through a retainer ring, the spring piece positioning sleeve 12 is sleeved on a limiting block 15, the limiting block 15 is arranged on the shaft 13 in an interference manner, the suction disc 11 is pressed with friction materials, the friction parts of the suction disc 11 are tightly attached to the support 3 through elastic force generated by deformation of the spring piece 10, power from the support 3 can be transmitted, the iron core component is arranged on the shell 14, the shell 14 is in interference connection with the shaft 13, the water seal 17 and the impeller 1 are arranged at the other end of the shaft 13, the impeller 1 and the shell 14 can rotate relatively, a magnetic field is generated when the coil 19 in the iron core component is electrified to attract the suction disc 11, the suction disc 11 enables the spring piece 10 to continuously deform, the friction force between the friction materials and the support 3 is reduced, the torsion spring 5 and the friction sleeve 8 are separated, the impeller 1 loses power, and the switch water pump based on the electromagnetic torsion spring type clutch stops working.
Example 3:
as described in the background art, the problem that the on-board water pump of the automobile engine cannot well select proper opening time according to the working temperature condition of the engine exists in the prior art, and in order to solve the technical problem, a transportation means is provided.
A vehicle having an engine and a cooling unit for dissipating heat from the engine, the cooling unit comprising a water pump; the water pump adopts the switch water pump based on the electromagnetic torsion spring type clutch shown in fig. 1.
Example 4:
in this embodiment, after the engaging plate 11 and the bracket 3 are treated by a coating or heat treatment, the friction material disposed on the engaging plate in embodiment 1 is replaced. The outer surface of the stent is provided with a coating instead of the friction sleeve mounted outside the stent in example 1, and in the present invention, the stent is heat-treated instead of the friction sleeve mounted outside the stent in example 1. The engaging plate and the iron core are provided with a coating instead of the cushion block in the embodiment 1, and the engaging plate or the iron core can adopt a heat treatment to achieve antifriction effect instead of the cushion block. The other points are the same as those in examples 1 to 3.
In the embodiment, an electromagnetic torsion spring clutch is provided, and an abrasion-resistant layer is coated on the outer ring of a torsion spring so as to reduce abrasion with a driven shaft and a torsion spring sheath.
Example 5:
as shown in fig. 4 and 5, in the present embodiment, another electromagnetic torsion spring type clutch is provided, and an operating device in the electromagnetic torsion spring type clutch is shown in fig. 4, in this solution, the torsion spring operating block 4 in embodiment 1 is removed, and the torsion spring operating block structure in embodiment 1 is directly processed into an integral structure with the engaging disc, so that the new engaging disc structure can overcome the force transmitted when the torsion spring 5 is twisted, and in a switch water pump based on the electromagnetic torsion spring type clutch, the spring piece and the engaging disc are compressed by a retainer ring to realize the movement as in embodiment 1.
As shown in fig. 4, the operating device comprises an engaging plate 11, a spring piece 10 and a spring piece positioning sleeve 12, wherein the engaging plate 11 enables a friction material part of the engaging plate 11 to be attached to the bracket through the spring piece 10, the spring piece 10 is fixedly connected with the spring piece positioning sleeve 12 through a retainer ring 16, the outer circle of the spring piece 10 is connected with the engaging plate 11, and an inner hole of the spring piece 10 is connected with the spring piece positioning sleeve 12. The structure of the engaging plate 11 is shown in fig. 5, and the torsion spring operating block structure in embodiment 1 is directly processed into an integral structure with the engaging plate.
Example 6:
in this embodiment, as shown in fig. 7, unlike the embodiments 1 to 5 in which the friction bushing is installed in the bracket, the bracket is not connected to the friction bushing, and the bracket 3 is directly connected to the spiral portion of the torsion spring in operation. Fig. 6 is a schematic diagram showing the assembly of the bracket and the friction sleeve in embodiments 1-5 of the present invention, and in order to distinguish the bracket from embodiments 1-5, the friction sleeve is removed from the outer circle of the inner ring of the bracket, and the spiral part of the torsion spring is directly contacted with the bracket during operation, as shown in fig. 7.
Example 7:
as shown in fig. 8, in the present embodiment, there is provided an iron core assembly in a switching water pump based on an electromagnetic torsion spring clutch, in which the spacer 18 is changed from the inner ring of the iron core 20 to the end face of the iron core 20 in embodiment 2, and the size of the spacer is larger than the size of the coil inside the iron core 20. The spacer 18 has an effect of effectively reducing friction between the core and the attraction disc.
Example 8:
as shown in fig. 9, in the present embodiment, there is provided an iron core assembly in a switching water pump based on an electromagnetic torsion spring clutch, wherein the inner ring of the iron core 20 in embodiment 2 is changed into the outer ring of the iron core 20, and the size of the spacer 18 is smaller than the outer ring of the iron core 20. Or the removal of antifriction material is instead directly replaced by an iron core. The spacer 18 has an effect of effectively reducing friction between the core and the attraction disc.
Example 9:
in the present embodiment, a switching water pump based on an electromagnetic torsion spring clutch is provided, and the shaft-connected bearing adopted by the shaft 13 in embodiment 2 is replaced by a shaft-connected bearing.
In this embodiment, an electromagnetic torsion spring type clutch-based switch water pump is provided, in which a spring piece is directly fixed to a stopper, so as to replace the middle spring piece positioning sleeve portion in embodiment 2.
Compared with the prior art, the invention has the beneficial effects that:
1. the electromagnetic torsion spring clutch transmits power to the driven shaft through torsion spring torsion, and the friction sleeve with small friction coefficient and wear resistance is arranged between the torsion spring and the support, so that the torsion spring can slip due to the small friction coefficient at the moment when the support just torsion starts to work, the damage of instant impact force to the driving pin of the torsion spring is reduced, and meanwhile, the material with good wear resistance is selected, so that the excessively rapid wear caused by the moment of torsion spring torsion and the severe friction generated by the support can be relieved.
2. The switch water pump based on the electromagnetic torsion spring clutch controls the work of the water pump in a mode of electrifying and de-electrifying the coil, can select proper starting time and proper working time according to different temperature conditions when the engine works, avoids the condition that the engine temperature rise time is influenced like a common vehicle-mounted water pump which is started to enter a working state, and further influences the output of engine power, thereby further causing an unnecessary fuel waste working mode, and further achieves the effects of reducing the fuel waste of the vehicle, saving energy and protecting environment.
While the present invention has been described in connection with the specific embodiments illustrated in the drawings, the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the invention, and various modifications and variations will be apparent to those skilled in the art. It should be understood by those skilled in the art that various modifications, equivalent substitutions or alterations can be made without inventive effort by those skilled in the art based on the technical solutions of the present invention, which remain within the scope of the present invention.
Claims (19)
1. An electromagnetic torsion spring clutch comprises a driving wheel assembly, a driven wheel assembly and an operating device, and is characterized in that: the driving wheel assembly is connected with the driven wheel assembly through a bearing, and relative rotation can be realized between the driving wheel assembly and the driven wheel assembly;
the driving wheel assembly comprises a belt pulley and a bracket, the belt pulley is connected with the bracket, and a bearing is arranged in the bracket; a friction sleeve is arranged outside the bracket;
the driven wheel assembly comprises a driven shaft, a torsion spring and a torsion spring sheath, the bearing is connected with the driven shaft, and the driven shaft is respectively connected with the torsion spring and the torsion spring sheath; the torsion spring comprises a driving pin, a driven pin and a spiral part, the spiral part is respectively connected with the driving pin and the driven pin, the driving pin is connected with the operating device, the driven pin is fixed on the driven shaft, and the other end of the friction sleeve is arranged in the spiral part; when the torsion spring is in a free state, the spiral part is in contact with the torsion spring sheath and the driven shaft, and when the torsion spring is in a working state, the spiral part is screwed up and is tightly held with a friction sleeve arranged outside the bracket;
The operating device comprises a suction disc, a torsion spring operating block, a spring piece and a spring piece locating sleeve, wherein a driving pin of the torsion spring extends into the torsion spring operating block, the torsion spring operating block is connected with the suction disc, the suction disc is attached to the bracket through the spring piece, the spring piece is fixedly connected with the spring piece locating sleeve through a check ring, the outer circle of the spring piece is connected with the suction disc, and an inner hole is connected with the spring piece locating sleeve;
the friction material is arranged on the suction disc and is positioned on one attaching side of the suction disc and the support of the driving wheel assembly; when the electromagnetic torsion spring type clutch works, the end face of the bracket is contacted with an attraction disc with friction materials pressed in the operating device;
the suction disc and the bracket can be treated by adopting a coating or heat treatment mode.
2. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: the cross section of the spiral part of the torsion spring is in an equal-diameter shape or a variable-diameter shape.
3. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: the number of turns of the spiral part of the torsion spring is 4-7.
4. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: the driving pin of the torsion spring adopts a straight-edge structure or a bent-edge structure.
5. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: the driven pin of the torsion spring is fixed between the driven shaft and the torsion spring sheath, and the driven shaft and the torsion spring sheath are fixed in an interference fit, threaded connection, welding or riveting mode.
6. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: the driven pin of the torsion spring adopts a hook-shaped structure or a bent structure.
7. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: the outer surface of the bracket can be provided with a coating, or the bracket adopts heat treatment.
8. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: a boss is arranged in one end of the torsion spring sheath, which is close to the driving pin of the torsion spring.
9. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: the spring piece and the suction disc are fixed in an interference fit, welding or riveting mode.
10. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: the torsion spring operating block and the suction disc are fixed in an interference fit, welding or riveting mode.
11. An electromagnetic torsion spring clutch in accordance with claim 1, wherein: the spring piece and the spring piece locating sleeve are fixed in an interference fit, welding or riveting mode.
12. A switch water pump based on electromagnetic torsion spring clutch, characterized by: comprising the electromagnetic torsion spring clutch of any one of claims 1-11, a core assembly and a pump body assembly; the pump body component is connected with the electromagnetic torsion spring type clutch and the iron core component respectively;
the pump body component comprises a shell, an impeller, a shaft, a limiting block, a water seal and a cushion block, wherein the impeller, the shaft, the limiting block, the water seal and the cushion block are arranged in the shell, the limiting block is arranged on the shaft, the shaft is sequentially connected with the water seal and the impeller, the impeller and the shell perform relative motion, the pump body component is connected with the electromagnetic torsion spring type clutch through the limiting block, and a spring piece locating sleeve in the electromagnetic torsion spring type clutch is connected with the limiting block; the pump body component is connected with the iron core component through a cushion block;
the iron core assembly comprises an iron core and a coil, the iron core is fixedly connected with the outside of the shell, the attraction disc is arranged at the position corresponding to the iron core in the electromagnetic torsion spring type clutch, the coil is arranged inside the iron core, and the iron core is close to the end face of one side of the attraction disc and is provided with the cushion block.
13. The switch water pump based on the electromagnetic torsion spring clutch as set forth in claim 12, wherein: the spring piece locating sleeve in the electromagnetic torsion spring type clutch is connected with the limiting block through the spring piece, and the spring piece locating sleeve circumferentially rotates relative to the limiting block.
14. The switch water pump based on the electromagnetic torsion spring clutch as set forth in claim 12, wherein: the spring piece locating sleeve and the limiting block are made of steel materials, rubber materials or powder metallurgy materials.
15. The switch water pump based on the electromagnetic torsion spring clutch as set forth in claim 12, wherein: the cushion block is square, round, oval or triangular.
16. The switch water pump based on the electromagnetic torsion spring clutch as set forth in claim 12, wherein: the outer surface of the attraction disc or the iron core adopts a coating, or the attraction disc or the iron core adopts a heat-treated material.
17. The switch water pump based on the electromagnetic torsion spring clutch as set forth in claim 12, wherein: the cushion block is arranged on the outer ring, the inner ring or the end face of the iron core, or the cushion block is arranged on the suction disc.
18. The switch water pump based on the electromagnetic torsion spring clutch as set forth in claim 12, wherein: the connection and fixation modes between the cushion block and the iron core or between the cushion block and the suction disc are interference fit, threaded connection, welding or riveting.
19. A vehicle having an engine and a cooling unit for dissipating heat from the engine, the cooling unit comprising a water pump; the method is characterized in that:
the water pump adopts the switch water pump based on the electromagnetic torsion spring type clutch as claimed in any one of claims 12 to 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710038390.5A CN108331852B (en) | 2017-01-19 | 2017-01-19 | Switch water pump based on electromagnetic torsion spring clutch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038390.5A CN108331852B (en) | 2017-01-19 | 2017-01-19 | Switch water pump based on electromagnetic torsion spring clutch |
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| CN108331852A CN108331852A (en) | 2018-07-27 |
| CN108331852B true CN108331852B (en) | 2024-01-16 |
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| KR20130109681A (en) * | 2012-03-28 | 2013-10-08 | 현대자동차주식회사 | Clutch device for water pump of vehicles |
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| CN203926502U (en) * | 2014-05-22 | 2014-11-05 | 龙口中宇机械有限公司 | A kind of electromagnetism torsional spring clutch that utilizes multi-disc clutch component to handle |
| CN204828363U (en) * | 2015-08-05 | 2015-12-02 | 龙口中宇热管理系统科技有限公司 | Utilize driven clutch of electromagnetism torsional spring of multi -disc clutch assembly manipulation |
| US20160298527A1 (en) * | 2013-11-29 | 2016-10-13 | Litens Automotive Partnership | Electromechanical spring clutch with integrated speed detection |
| CN205779196U (en) * | 2016-07-18 | 2016-12-07 | 嘉兴兴涛汽车零部件有限公司 | Engine water pump electromagnetic clutch |
| CN206487794U (en) * | 2017-01-19 | 2017-09-12 | 龙口中宇热管理系统科技有限公司 | A kind of switch water pump based on electromagnetism torsion spring clutch |
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2017
- 2017-01-19 CN CN201710038390.5A patent/CN108331852B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110063109A (en) * | 2009-12-04 | 2011-06-10 | 현대자동차주식회사 | Water pump for vehicle |
| US20130313068A1 (en) * | 2010-10-04 | 2013-11-28 | Litens Automotive Partnership | Driven component with clutch for selective operation of component |
| CN102588069A (en) * | 2012-03-23 | 2012-07-18 | 龙口中宇机械有限公司 | Speed-adjustable water pump |
| KR20130109681A (en) * | 2012-03-28 | 2013-10-08 | 현대자동차주식회사 | Clutch device for water pump of vehicles |
| CN104105896A (en) * | 2012-09-25 | 2014-10-15 | 莱顿汽车部件（苏州）有限公司 | Vent structure for clutched device |
| US20160298527A1 (en) * | 2013-11-29 | 2016-10-13 | Litens Automotive Partnership | Electromechanical spring clutch with integrated speed detection |
| CN203926502U (en) * | 2014-05-22 | 2014-11-05 | 龙口中宇机械有限公司 | A kind of electromagnetism torsional spring clutch that utilizes multi-disc clutch component to handle |
| CN204828363U (en) * | 2015-08-05 | 2015-12-02 | 龙口中宇热管理系统科技有限公司 | Utilize driven clutch of electromagnetism torsional spring of multi -disc clutch assembly manipulation |
| CN205779196U (en) * | 2016-07-18 | 2016-12-07 | 嘉兴兴涛汽车零部件有限公司 | Engine water pump electromagnetic clutch |
| CN206487794U (en) * | 2017-01-19 | 2017-09-12 | 龙口中宇热管理系统科技有限公司 | A kind of switch water pump based on electromagnetism torsion spring clutch |
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| Publication number | Publication date |
|---|---|
| CN108331852A (en) | 2018-07-27 |
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