CN116006373A - One-way device for idling start-stop vehicle - Google Patents

Abstract

The invention relates to the field of automobile one-way devices, in particular to a one-way device for idling start-stop vehicles. Aiming at the disadvantages that the power transmission may not be stable enough and the meshing between the drive gear and the engine flywheel is not smooth enough or even stuck when the one-way device in the prior art is used for idling start-stop cars. The invention provides a one-way device for idling start-stop vehicles, which includes a one-way device main body, the one-way device main body includes a vertically arranged output shaft and a drive wheel assembly coaxially arranged in the middle section of the output shaft through a helical spline, the output The upper end of the shaft is connected to the starter motor in one-way transmission through the first one-way clutch, and the lower end is coaxially installed with a cover through the second one-way clutch; When the positioning projection is moved to match the positioning groove, a lubricating component for lubricating the lower end of the driving gear is formed at the accommodating groove.

Description

One-way device for idling start-stop vehicle

technical field

The invention relates to the field of automobile one-way devices, in particular to a one-way device for idling start-stop vehicles.

Background technique

The one-way device is one of the key components of the automobile starter. Its main function is to transmit positive torque and prevent the starter from being damaged by the generator. The one-way device is the core component of the electric starter, and is widely used in electric starting systems such as cars, buses, trucks, ships, and helicopters.

One of the most important problems to be solved by automobile energy-saving technology is to reduce the environmental pollution caused by fuel consumption and exhaust emissions. According to the survey, in China's large and medium-sized cities and some coastal cities, the average ratio of car driving time to the time spent waiting for red lights or traffic jams is 3:1, and some cities even reach 5:2. On the road, urban roads will become more congested. One can imagine how much fuel will be wasted and how much toxic exhaust gas will be produced by so many idling cars. Therefore, the idling start-stop system came into being. The working principle of this system is that when the vehicle speed is lower than 3km/h when encountering a red light or traffic jam, the engine will automatically turn off. At the moment of braking, the starter will quickly start the engine, which mainly has the following characteristics:

①Energy saving: Eliminate idling at idling speed and save fuel consumed during idling time;

②Environmental protection: After the engine is automatically turned off, the exhaust emission is zero;

③Improve engine power output, thereby prolonging engine life: The fuel cannot be completely burned when the car is idling, which is the main cause of engine carbon deposits. Engine carbon deposits will burn engine oil to increase energy consumption and reduce engine power output.

With the continuous rise of oil prices, the economy of the car idling start-stop system is becoming more and more obvious. Nowadays, the pressure on domestic traffic is increasing, and the number of people who own their own vehicles will only increase. Waiting for red lights at intersections has become a It is commonplace to wait for a red light to idle while waiting for a habit. According to the survey, a car with a displacement of 1.6L will consume 1.12L/h after idling for 3 minutes, which is equivalent to the fuel consumption of driving 1 km within 3 minutes. The fuel consumption brought by the car can be imagined how many vehicles there are in the country.

In order to adapt to the general environmental trend of automobile energy saving and emission reduction, most automobile manufacturers in the market have introduced idle start-stop systems for various models. After the vehicle is equipped with a start-stop system, the vehicle may start frequently; Starting means that the frequency of use of the car one-way device is greatly increased, so it is necessary for the car one-way device for idling start and stop to work stably and smoothly during frequent starts and has better durability to meet the requirements of frequent starts. Higher requirements on the service life of automotive one-way devices. When the existing automotive one-way device is used in a vehicle that has been matched with an idle start-stop system, due to the greatly increased starting frequency, the power transmission may not be stable enough, and the meshing between the drive gear and the engine flywheel may not be smooth enough or even stuck. And affect the normal operation of the car one-way device.

Contents of the invention

Aiming at the disadvantages that the power transmission may not be stable enough and the meshing between the drive gear and the engine flywheel is not smooth enough or even stuck when the one-way device in the prior art is used for idling start-stop cars.

The invention provides a one-way device for idling start-stop vehicles, which includes a one-way device main body. The one-way device main body includes a vertically arranged output shaft and a drive wheel assembly coaxially arranged in the middle section of the output shaft through a helical spline. The output The upper end of the shaft is connected to the starter motor in one-way transmission through the first one-way clutch, and the lower end is coaxially equipped with a cover through the second one-way clutch; The positioning protrusion, the driving gear and the shifting fork used to cooperate with the external shifting fork to drive the driving wheel assembly to move along the output shaft are arranged in sequence; the positioning protrusion is uniformly formed with a plurality of transmission teeth along its circumferential direction, and the driving gear The thickness is greater than that of the engine flywheel, and the lower end of the driving gear is chamfered;

The upper side of the cover forms an accommodating groove for receiving the positioning protrusion and the lower end of the driving gear; The lubricating unit for lubricating the lower end of the gear.

Specifically, in the driving process of a vehicle matched with an idle start-stop system, frequent starts have put forward higher requirements for the stability of use, smoothness of work and service life of the main body of the one-way device; the one-way device in the present invention The main body can lubricate the lower end of the drive gear that first contacts and meshes with the engine flywheel during each start-up process, so that the drive gear can mesh with the engine flywheel more smoothly and stably and realize power transmission; thus, it can better improve the single The service life of the main body of the directing device is improved, and at the same time, the smooth progress of the entire starting process is better ensured. Since sufficient lubrication can be automatically given to the drive gear during each starting process, the frequency of manual relubrication can be preferably reduced, thereby preferably reducing the labor burden.

As a preference, a receiving ring coaxially fixed to the output shaft is arranged in the accommodating groove, and a positioning groove for cooperating with the positioning protrusion is formed in the middle of the receiving ring; The teeth and the edge of the groove wall of the positioning groove are all formed with chamfers; the end below the output shaft is equipped with a retaining ring for preventing the cover from falling off downwards through a circlip.

The transmission teeth in the circumferential direction of the positioning protrusion can generate power transmission with the receiving ring formed with the positioning groove. Since the receiving ring is fixed on the output shaft, the synchronous transmission between the positioning protrusion and the receiving ring can cooperate with the output shaft. Power transmission through the splines to the drive wheel assembly collectively ensures stable synchronous rotation between the drive gear and the output shaft.

Preferably, a buffer ring is coaxially provided at the positioning groove of the receiving ring, and the buffer ring penetrates the receiving ring in the axial direction; the buffer ring moves along its axial and circumferential directions relative to the receiving ring, and the buffer ring is close to the side of the driving gear The outer wall protrudes from the inner wall of the positioning groove to form a protrusion; the middle part of the positioning protrusion is formed with a sliding groove for sliding cooperation with the buffer ring, and the side of the sliding groove near the buffer ring is formed with a fillet for receiving the buffer ring. When the protrusion is matched with the positioning groove, the buffer ring abuts against and cooperates with the positioning protrusion; the outer wall of the side of the buffer ring far away from the driving gear is abutted against an extrusion ring.

Preferably, the lubricating assembly includes an annular storage bin formed on the side of the cover close to the extrusion ring for receiving the extrusion ring and storing lubricating oil; the lower part of the storage bin is provided with a filling port for replenishing lubricating oil, The outer circumference of the storage bin is evenly distributed to form a plurality of oil pipelines from the storage bin to the outer wall of the upper end of the cover, and a plurality of first springs are evenly arranged in the circumferential direction between the lower bottom wall of the storage bin and the extrusion ring; when the buffer ring When the extrusion ring is driven to move axially toward the storage bin, the extrusion ring compresses the spring and at the same time presses the lubricating oil in the storage bin into the oil pipeline, and the inner wall of the extrusion ring and the storage bin is sealed. The outer periphery of the spring is sheathed with a sealing ring for isolating the spring from the lubricating oil.

Specifically, when the buffer ring drives the extrusion ring to move axially, the extrusion ring compresses the first spring to form an axial pressure on the lower bottom wall of the storage bin, and at the same time the buffer ring also receives the pressure from the positioning protrusion. At this time, the buffer ring, the squeeze ring and the bottom wall of the storage bin, that is, the cover form a whole under force. When the positioning protrusion rotates with the output shaft, the whole is supported by the second one-way clutch. The restriction does not form rotation along the circumferential direction with the rotation direction of the output shaft, thereby ensuring the stability of the positions of the first spring, the storage bin and the oil pipeline. In addition, the first spring can preferably reduce the axial impact of the driving wheel assembly during rotation; thus, the stability of the driving gear during rotation can be improved.

After the starting process is completed, the drive wheel assembly moves back along the output shaft driven by the shift fork, and the pressure of the positioning protrusion on the buffer ring in the axial direction is eliminated; the pressure of the extrusion ring on the first spring is also eliminated. The compressed first spring recovers and drives the extrusion ring to move along the direction of moving out of the storage chamber and removes the pressure on the lubricating oil.

As preferably, an oil seepage bin is formed at one end of the oil delivery pipeline far from the storage bin, and an oil seepage outlet located at the outer wall of the upper end of the cover is provided at the lower end of the oil seepage bin; The oil brush is pressed into the oil pipeline by the squeeze ring and the lubricating oil in the oil seepage tank slowly seeps through the oil seepage outlet to the oil brush on the outer wall of the upper end of the cover. The total volume of the oil seepage tank and the oil delivery pipeline is larger than that of the oil storage tank The storage volume of internal lubricating oil.

When the extrusion ring presses the lubricating oil in the storage bin into the oil delivery pipeline, the lubricating oil enters into the oil seepage compartment along each oil delivery pipeline. It can be understood that since the total volume of the oil seepage tank and the oil pipeline has a margin compared with the oil storage tank, when the squeeze ring presses the lubricating oil into the oil pipeline, the squeeze ring will not fail due to insufficient volume. Pushing the magazine even affects the axial movement of the buffer ring and positioning projections. Thereafter, the lubricating oil slowly seeps into the oil brush at the outer wall of the upper end of the cover through the oil seepage outlet, and when the driving gear rotates, the lower end of the driving gear contacts the oil brush and realizes the coating of the lubricating oil on its surface. When the extrusion ring exits the storage chamber, the lubricating oil in the oil seepage chamber will naturally flow back to the storage chamber through the oil pipeline under the action of gravity. mouth to replenish.

Preferably, both the first one-way clutch and the second one-way clutch have a one-way clutch main body with the same structure, the one-way clutch main body includes a star gear assembly, and the star gear assembly includes a star gear housing, a cover, and a circular gasket.

As a preference, the inner wall of the star gear housing is provided with a plurality of one-way clutch grooves, and rollers and second springs are arranged in the one-way clutch grooves; the one-way clutch grooves are composed of a second spring accommodation section and a roller accommodation section, the The cross-sectional outer ring of the roller accommodation section is sloped, and a limit stopper is arranged between the two adjacent accommodation grooves.

The cross-sectional outer ring of the roller containing section is in the shape of a slope. When the roller moves along the downhill section of the slope, the main body of the one-way clutch realizes the separation of power transmission. The accommodating section is clamped and power transmission is realized, so that synchronous transmission or transmission separation between various transmission components can be preferably realized.

Preferably, the roller is placed in the roller accommodation section, the second spring is located in the second spring accommodation section, one end of the second spring is against the roller, and the other end is against the limit block; The opening end of the receiving groove of the gear housing, a limiting ring groove is arranged on the star gear housing, and the end of the cover is pressed into the limiting ring groove.

As a preference, the inner wall of the star gear housing is provided with a plurality of one-way clutch grooves, and the one-way clutch grooves are provided with a cylindrical push rod and two third springs, and the length of the push rod is greater than the width of the spring, and the push rod The cross-section of the push rod head is larger than the cross-sectional area of the spring.

In the present invention, the structure of balls and springs in the prior art is replaced by a cylindrical push rod and two third springs, so that the direct impact of the roller on the spring can be avoided, thereby protecting the spring; and the length of the push rod is greater than The width of the third spring is tightened to effectively avoid the problem that the third spring shortens and deforms, causing the entire one-way clutch to slip and fail to work normally; the cross-section of the push rod head is larger than the cross-sectional area of the spring to avoid the third spring The spring is in contact with the output shaft causing friction to damage the spring. In addition, during the installation process of the first one-way clutch and the second one-way clutch, a one-way clutch main body of a corresponding appropriate size can be selected according to the actual situation.

Description of drawings

Fig. 1 is the structural representation of the one-way device main body in embodiment 1;

Figure 2 is a schematic cross-sectional view of the main body of the one-way device in Embodiment 1;

Fig. 3 is the structural representation of cover cover and output shaft in embodiment 1;

Fig. 4 is the structural representation of driving wheel assembly in embodiment 1;

Fig. 5 is a schematic structural view of the main body of the one-way device in embodiment 2;

6 is a schematic cross-sectional view of the main body of the one-way device in Embodiment 2;

Fig. 7 is the structural representation of cover and output shaft in embodiment 2;

Fig. 8 is the structural representation of drive wheel assembly in embodiment 2;

Fig. 9 is a schematic cross-sectional view of the planetary gear housing in Embodiment 3;

Fig. 10 is the structural representation of cylindrical push rod and the 3rd spring in embodiment 4;

Fig. 11 is another structural schematic diagram of the cylindrical push rod and the third spring in Embodiment 4.

Detailed ways

In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the examples are only for explaining the present invention and not for limiting it.

Example 1

1-4, this embodiment provides a one-way device for idling start-stop vehicles, including a one-way device body 100, the one-way device body 100 includes a vertically arranged output shaft 110 and a coaxial shaft through a helical spline 130 The driving wheel assembly 120 is located in the middle section of the output shaft 110. The upper end of the output shaft 110 is connected to the starter motor in one-way transmission through the first one-way clutch 140. The first one-way clutch 140 can better realize the connection between the output shaft 110 and the starter motor. The synchronous rotation between them can prevent the engine flywheel from driving the output shaft 110 in reverse to protect the starter motor; the lower end of the output shaft 110 is coaxially equipped with a cover 150 through the second one-way clutch 210; Ring structure; the second one-way clutch 210 can realize the unidirectional locking of the cover 150 relative to the output shaft 110 , and when the output shaft 110 rotates, the cover 150 will not rotate accordingly.

The driving wheel assembly 120 includes a positioning protrusion 121, a driving gear 122, and a fork portion 123 arranged in sequence from bottom to top to cooperate with an external shift fork to drive the driving wheel assembly 120 to move along the output shaft 110; the positioning protrusion 121 moves along the Its circumferential direction is evenly formed with a plurality of driving teeth, the thickness of driving gear 122 is greater than the thickness of engine flywheel, and the lower end of driving gear 122 is formed with chamfering; A more stable power transmission can be realized. At the same time, the chamfering of the lower end of the driving gear 122 can make the engagement between the driving gear 122 and the flywheel of the engine smoother, thereby ensuring the stable progress of the entire starting process. The upper side of the cover 150 is formed to be used to receive the accommodating groove 151 of positioning protrusion 121 and the lower end of driving gear 122; Angle grinding disc 152;

A receiving ring 160 coaxially fixed to the output shaft 110 is arranged in the accommodating groove 151, and a positioning groove 161 for matching with the positioning protrusion 121 is formed in the middle of the receiving ring 160; the positioning protrusion 121 is uniformly formed along its circumferential direction There are a plurality of transmission teeth, and the groove wall edges of the positioning groove 161 are all formed with chamfers; The sheet 152 grinds the chamfer of the lower end of the driving gear 122; the end below the output shaft 110 is equipped with a retaining ring 230 for preventing the cover 150 from falling off downwards through a snap spring.

It can be understood that, on the one hand, the transmission teeth in the circumferential direction of the positioning protrusion 121 can generate power transmission with the receiving ring 160 formed with the positioning groove 161. Since the receiving ring 160 is fixed on the output shaft 110, the positioning protrusion 121 The synchronous transmission with the receiving ring 160 can cooperate with the power transmission of the output shaft 110 to the drive wheel assembly 120 through splines to ensure stable synchronous rotation between the drive gear 122 and the output shaft 110 .

On the other hand, through the cooperation between the positioning protrusion 121 and the positioning groove 161, the shift fork portion 123 can be used to respectively position the two sides of the driving wheel assembly 120 in the axial direction; Stability in the axial direction, so the stable positioning of the driving wheel assembly 120 in the axial direction can also effectively avoid the chamfering of the lower end of the driving gear 122 from contacting the grinding disc 152 due to the axial movement deviation of the driving gear 122 or Excessive contact will affect the transmission, which can better ensure the stable grinding between the chamfer at the lower end of the drive gear 122 and the grinding disc 152 .

In addition, because the thickness of the driving gear 122 is greater than that of the engine flywheel, during the starting process, after the driving gear 122 moves under the drive of the shift fork, the middle section of the driving gear 122 meshes with the engine flywheel, and the lower end of the driving gear 122 is only It is in contact with the grinding plate 152 at the cover 150 but not with the engine flywheel; therefore the cover 150 will not interfere with the engine flywheel so as not to affect the smooth and stable progress of the entire starting process.

Specifically, when the vehicle is started, the shift fork 123 cooperates with the external shift fork to drive the drive wheel assembly 120 to move axially toward the engine flywheel; since the drive wheel assembly 120 is installed on the output shaft 110 through the helical spline 130, the drive wheel When the assembly 120 moves along the output shaft 110 , it rotates slightly relative to the output shaft 110 so that the drive gear 122 in the drive wheel assembly 120 is stably meshed with the engine flywheel to drive the engine flywheel to rotate to complete the vehicle start. When starting, the lower end of the drive gear 122 first contacts the flywheel of the engine through chamfering and completes the engagement.

During driving of a vehicle equipped with an idle start-stop system, the drive gear 122 will frequently engage and then disengage from the engine due to frequent starting. Therefore, it is easy to cause unevenness in the chamfer and affect the smooth meshing between the driving gear 122 and the flywheel of the engine. Compared with the prior art, the lower end of the output shaft 110 of the one-way device main body 100 in this embodiment is provided with a cover 150, and the cover 150 remains stationary when the drive gear 122 rotates with the output shaft 110, so that the drive gear The chamfer at the lower end of 122 forms a relative movement with the grinding disc 152 at the upper inner wall of the cover 150 for grinding. Specifically, during each start-up process, the grinding plate 152 can grind the chamfer so as to better keep the chamfer smooth, thereby increasing the service life of the checker main body 100 .

In addition, it is worth noting that the grinding disc 152 in this embodiment adopts a triangular grinding disc 152 , so that the noise during the chamfering of the driving gear 122 and the grinding disc 152 can be preferably reduced. At the same time, the grinding discs 152 are evenly arranged at an interval of 30 degrees along the upper inner wall of the accommodating groove 151, which can ensure that the chamfering of the driving gear 122 is fully ground, while ensuring that the friction between the driving gear 122 and the grinding discs 152 will not affect the driving force. The gear 122 produces excessive force and affects the normal rotation of the driving gear 122 .

Therefore, in the driving process of a vehicle matched with an idle start-stop system, frequent starting has put forward higher requirements for the stability of use, smoothness of work and service life of the main body 100 of the one-way device; the one-way device in this embodiment The main body 100 can grind the chamfer at the lower end of the driving gear 122 which plays an important role in the meshing process with the engine flywheel during each starting process, so that the driving gear 122 can mesh with the engine flywheel more smoothly and stably; and It can better improve the service life of the main body 100 of the one-way device, and at the same time better ensure the smooth progress of the whole starting process. Since the lower end of the drive gear 122 can be automatically chamfered for grinding during each starting process, the frequency of manual grinding can be reduced, thereby reducing the labor burden.

Example 2

With reference to Figures 5-8, this embodiment provides a one-way device for idling start-stop vehicles, which is different from Embodiment 1 in that there is no grinding plate at the inner wall of the upper end of the accommodating groove 151 in this embodiment 152 ; when the driving wheel assembly 120 moves axially until the positioning protrusion 121 matches the positioning groove 161 , a lubricating assembly for lubricating the lower end of the driving gear 122 is formed at the accommodation groove 151 .

The positioning groove 161 of the receiving ring 160 is coaxially provided with a buffer ring 610, and the buffer ring 610 penetrates the receiving ring 160 in the axial direction; The outer wall of one side of the driving gear 122 protrudes from the inner wall of the positioning groove 161 to form a protrusion; the middle part of the positioning protrusion 121 is formed with a sliding groove 1211 for sliding engagement with the buffer ring 610, and the sliding groove 1211 is formed near the buffer ring 610. There is a fillet for receiving the buffer ring 610. When the positioning protrusion 121 and the positioning groove 161 cooperate, the buffer ring 610 and the positioning protrusion 121 abut against and cooperate; Press ring 620.

Specifically, when the shift fork drives the driving wheel assembly 120 to move along the output shaft 110, the positioning projection 121 pushes the buffer ring 610 in the axial direction. Its circumferential movement cooperates, so when the buffer ring 610 is pushed by the positioning protrusion 121 in the axial direction, the buffer ring 610 will not form a circumferential power transmission between the positioning protrusion 121 and the receiving ring 160; therefore, the buffer ring 610 Relative circumferential movement can be performed between the positioning protrusion 121 and the receiving ring 160 .

The lubricating assembly includes an annular storage chamber 630 formed on the side of the cover 150 close to the extrusion ring 620 for receiving the extrusion ring 620 and storing lubricating oil; A plurality of oil pipelines 640 from the storage bin 630 to the outer wall of the upper end of the cover 150 are evenly distributed on the outside of the storage bin 630 in the circumferential direction, and there are many oil pipelines 640 evenly arranged in the circumferential direction between the lower bottom wall of the storage bin 630 and the extrusion ring 620 a first spring; when the buffer ring 610 drives the squeeze ring 620 to move axially toward the storage bin 630, the squeeze ring 620 compresses the spring and simultaneously presses the lubricating oil in the storage bin 630 into the oil delivery pipeline 640, and the squeeze ring 620 The inner walls abutting against the storage chamber 630 are all sealed, and the outer periphery of the first spring is sheathed with a sealing ring for isolating the spring from the lubricating oil.

Specifically, when the buffer ring 610 drives the squeeze ring 620 to move axially, the squeeze ring 620 compresses the first spring to form an axial pressure on the lower bottom wall of the storage bin 630, and the buffer ring 610 is also positioned. The pressure given by the protrusion 121, at this time, the buffer ring 610, the squeeze ring 620 and the bottom wall of the storage bin 630, that is, the cover 150 form a whole under force, and when the positioning protrusion 121 rotates with the output shaft 110 During the process, the whole is restricted by the second one-way clutch 210 and will not rotate along the circumferential direction with the rotation direction of the output shaft 110 , thereby ensuring the stability of the first spring, the storage bin 630 and the oil delivery pipeline 640 . In addition, the first spring can better reduce the axial impact of the driving wheel assembly 120 during rotation; thus, the stability of the driving gear 122 during rotation can be improved.

After the starting process is completed, the drive wheel assembly 120 is moved back along the output shaft 110 under the drive of the shift fork, and the axial pressure of the positioning protrusion 121 on the buffer ring 610 is eliminated; the pressure of the squeeze ring 620 on the first spring is also released. After that, the compressed first spring recovers and drives the squeeze ring 620 to move out of the storage bin 630 and removes the pressure on the lubricating oil.

One end of the oil pipeline away from the storage bin 630 is formed with an oil seepage bin 650, and the lower end of the oil seepage bin 650 is provided with an oil seepage outlet located at the outer wall of the upper end of the cover 150; the oil seepage outlet is provided with a lubricant for receiving seepage. The oil brush 710 is pressed into the oil pipeline 640 by the extrusion ring 620 and the lubricating oil in the oil seepage chamber 650 slowly seeps into the oil brush 710 on the outer wall of the upper end of the cover 150 through the oil seepage outlet. When the driving gear 122 rotates At this time, the lower end of the driving gear 122 is in contact with the oil brush 710 and realizes the coating of lubricating oil on its surface. The total volume of the oil leakage bin 650 and the oil delivery pipeline 640 is greater than the storage volume of lubricating oil in the oil storage bin.

Specifically, when the squeeze ring 620 presses the lubricating oil in the storage bin 630 into the oil delivery pipeline 640 , the lubricating oil enters the oil seepage bin 650 along each oil delivery pipeline. It can be understood that since the total volume of the oil leakage chamber 650 and the oil delivery pipeline 640 has a margin compared with the oil storage tank, when the squeeze ring 620 presses the lubricating oil into the oil delivery pipeline 640, there will be no problems caused by insufficient volume. The extrusion ring 620 cannot advance the storage bin 630 and even affects the axial movement of the buffer ring 610 and the positioning protrusion 121 . Thereafter, the lubricating oil slowly seeps into the oil brush 710 on the outer wall of the upper end of the cover 150 through the oil seepage outlet. Coated. When the extrusion ring 620 exits the storage bin 630, the lubricating oil in the oil seepage bin 650 naturally flows back into the storage bin 630 through the oil delivery pipeline 640 under the action of gravity. , it can be replenished manually through the filler port.

Therefore, in the driving process of a vehicle matched with an idle start-stop system, frequent starting has put forward higher requirements for the stability of use, smoothness of work and service life of the main body 100 of the one-way device; the one-way device in this embodiment The main body 100 can lubricate the lower end of the drive gear 122 that first contacts and meshes with the engine flywheel during each start-up process, so that the drive gear 122 can mesh with the engine flywheel more smoothly and stably and realize power transmission; The service life of the main body 100 of the one-way device is preferably improved, and at the same time, the smooth progress of the entire starting process is better ensured. Since sufficient lubrication can be automatically given to the driving gear 122 during each starting process, the frequency of manual relubrication can be preferably reduced, thereby preferably reducing labor burden.

Example 3

9, based on Embodiment 1 or Embodiment 2, this embodiment provides a one-way device for idling start-stop vehicles. In this embodiment, both the first one-way clutch 140 and the second one-way clutch 210 have The one-way clutch main body with the same structure, the one-way clutch main body includes a star gear assembly, and the star gear assembly includes a star gear housing, a cover 220, and a circular gasket; the cover 220 can better improve the installation stability of the one-way clutch main body itself The inner wall of the star gear housing is provided with a plurality of one-way clutch grooves 1010, and rollers 1030 and second springs 1020 are arranged in the one-way clutch grooves 1010; the one-way clutch grooves 1010 are accommodated by the second spring 1020 and Roller 1030 accommodation section, the cross-sectional outer ring of the roller 1030 accommodation section is sloped, and a limit stop is set between the two adjacent accommodation grooves;

The roller 1030 is placed in the accommodating section of the roller 1030, the second spring 1020 is located in the accommodating section of the second spring 1020, one end of the second spring 1020 is against the roller 1030, and the other end is against the limit block; The cover 220 is at the opening end of the receiving groove of the planetary gear housing, and a limiting ring groove is arranged on the planetary gear housing, and the end of the cover 150 is pressed into the limiting ring groove.

It can be understood that the cross-sectional outer ring of the accommodating section of the roller 1030 is in the shape of a slope. When the roller 1030 moves along the downhill section of the slope, the main body of the one-way clutch realizes power transmission separation. When the roller 1030 moves along the uphill section of the slope At this time, the roller 1030 is stuck in the accommodation section of the roller 1030 and realizes power transmission, so that synchronous transmission or transmission separation between various transmission components can be preferably realized.

In this embodiment, when the first one-way clutch 140 is installed, the roller 1030 moves along the uphill section in the accommodating section of the roller 1030 when the starter motor drives the output shaft 110 to rotate synchronously, so as to ensure that the starter motor can The output shaft 110 is stably driven to rotate, and the output shaft 110 cannot reversely drive the starter motor to rotate, thereby protecting the starter motor. When the second one-way clutch 210 is installed, the roller 1030 moves along the downhill section in the accommodation section of the roller 1030 when the output shaft 110 rotates under the drive of the starter motor. The power transmission between them is separated, and the output shaft 110 will not drive the cover 150 to rotate synchronously therewith, thereby ensuring that the grinding disc 152 in the accommodation groove 151 of the cover 150 and the driving gear 122 can form relative motion for grinding. In addition, during the installation process of the first one-way clutch 140 and the second one-way device, a one-way clutch body of a corresponding appropriate size can be selected according to the actual situation.

Example 4

10-11, based on Embodiment 1 or Embodiment 2, this embodiment provides a one-way device for idling start-stop vehicles, which differs from Embodiment 1 in that the first one-way device in this embodiment Both the clutch 140 and the second one-way clutch 210 have a one-way clutch main body, the one-way clutch main body includes a star gear assembly, and the star gear assembly includes a star gear housing, a cover 220, and a circular gasket; the inner wall of the star gear housing A plurality of one-way clutch grooves 1010 are provided, and a cylindrical push rod 1110 and two third springs 1120 are arranged in the one-way clutch groove 1010, and the length of the push rod is greater than the width of the spring, and the cross-section of the push rod head of the push rod is larger than The cross-sectional area of the spring.

Specifically, compared with the prior art, in this embodiment, the cylindrical push rod 1110 and the two third springs 1120 replace the structure of the ball and the spring in the prior art, so that the direct impact of the roller 1030 on the spring can be avoided. impact, and then play a protective role for the spring; and the length of the push rod is greater than the third spring 1120 and tightens the width, which effectively avoids the problem that the third spring 1120 shortens and deforms, causing the entire one-way clutch to slip and fail to work normally during use; The cross-section of the push rod head of the rod is larger than the cross-sectional area of the spring to prevent the third spring 1120 from contacting the output shaft 110 and causing friction to damage the spring. In addition, during the installation process of the first one-way clutch 140 and the second one-way clutch 210, a one-way clutch main body of a corresponding appropriate size can be selected according to the actual situation.

It is easy to understand that, on the basis of one or several embodiments provided by this application, those skilled in the art can combine, split, recombine, etc., the embodiments of this application to obtain other embodiments, and these embodiments do not exceed the scope of this application. The scope of protection applied for.

The above schematically describes the present invention and its implementation, which is not restrictive, and what is shown in the drawings is only one of the implementations of the present invention, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, without creatively designing a structural mode and embodiment similar to the technical solution, it shall all belong to the protection scope of the present invention .

Claims (9)

1. A one-way device for idling start-stop vehicles, characterized in that: it comprises a one-way device main body (100), and the one-way device main body (100) includes a vertically arranged output shaft (110) and a helical spline ( 130) The drive wheel assembly (120) coaxially arranged in the middle section of the output shaft (110). The upper end of the output shaft (110) is connected to the starter motor in one-way transmission through the first one-way clutch (140), and the lower end is connected to the starter motor through the second one-way clutch (140). The clutch (210) is coaxially equipped with a cover (150); the cover (150) has a ring structure with a small bottom and a large top; the driving wheel assembly (120) includes positioning protrusions (121), which are arranged sequentially from bottom to top, The driving gear (122) and the shifting fork part (123) used to cooperate with the external shifting fork to drive the driving wheel assembly (120) to move along the output shaft (110); a transmission tooth, the thickness of the driving gear (122) is greater than the thickness of the engine flywheel, and the lower end of the driving gear (122) is formed with a chamfer; The upper side of the cover (150) is formed for receiving the accommodation groove (151) of the lower end of the positioning protrusion (121) and the driving gear (122); when the driving wheel assembly (120) moves axially to the positioning protrusion (121 ) is matched with the positioning groove (161), a lubricating assembly for lubricating the lower end of the drive gear (122) is formed at the accommodation groove (151). 2. A one-way device for idling start-stop vehicles according to claim 1, characterized in that: a receiving ring (160) coaxially fixed to the output shaft (110) is arranged in the accommodating groove (151) , the middle part of the receiving ring (160) is formed with a positioning groove (161) for matching with the positioning protrusion (121); the positioning protrusion (121) is uniformly formed with a plurality of transmission teeth along its circumference, and the positioning groove ( 161) are formed with chamfers on the edge of the groove wall; the end below the output shaft (110) is equipped with a retaining ring (230) for preventing the cover (150) from falling off downwards through a snap ring. 3. A one-way device for idling start-stop vehicles according to claim 2, characterized in that: a buffer ring (610) is provided coaxially at the positioning groove (161) of the receiving ring (160), The buffer ring (610) penetrates the receiving ring (160) in the axial direction; the buffer ring (610) moves along its axial and circumferential directions relative to the receiving ring (160), and the buffer ring (610) is close to the side of the driving gear (122) The outer wall protrudes from the inner wall of the positioning groove (161) to form a protrusion; the middle part of the positioning protrusion (121) is formed with a sliding groove (1211) for sliding engagement with the buffer ring (610), and the sliding groove (1211) is close to the buffer ring ( One side of 610) is formed with a fillet for receiving the buffer ring (610), and when the positioning protrusion (121) and the positioning groove (161) are matched, the buffer ring (610) and the positioning protrusion (121) abut and cooperate; An extruded ring (620) abuts against the outer wall of the buffer ring (610) on one side far from the driving gear (122). 4. A one-way device for idling start-stop vehicles according to claim 3, characterized in that: the lubricating assembly includes a side of the cover (150) close to the extrusion ring (620) for receiving Squeeze the ring (620) and form an annular storage bin (630) for storing lubricating oil; the lower part of the storage bin (630) is provided with a filling port for replenishing lubricating oil, and the outer circumference of the storage bin (630) is evenly distributed to form A plurality of oil pipelines (640) from the storage bin (630) to the outer wall of the upper end of the cover (150), and a plurality of first A spring; when the buffer ring (610) drives the squeeze ring (620) to move axially toward the storage bin (630), the squeeze ring (620) compresses the spring and simultaneously presses the lubricating oil in the storage bin (630) into The inner wall of the oil pipeline (640), the extrusion ring (620) and the storage bin (630) are all sealed, and the outer periphery of the first spring is provided with a sealing ring for isolating the spring from the lubricating oil . 5. A one-way device for idling start-stop vehicles according to claim 4, characterized in that: an oil leakage chamber (650) is formed at one end of the oil delivery pipeline far from the storage chamber (630), and the oil leakage chamber ( 650) is provided with an oil seepage outlet located at the upper outer wall of the cover (150); the oil seepage outlet is provided with an oil brush for receiving the oozing lubricating oil, which is pressed into the oil delivery pipeline by the squeeze ring (620) ( 640) and the lubricating oil in the oil seepage chamber (650) slowly seeps to the oil brush at the outer wall of the upper end of the cover (150) through the oil seepage outlet, and the total volume of the oil seepage chamber (650) and the oil delivery pipeline (640) is greater than The storage volume of lubricating oil in the oil storage bin. 6. A one-way device for idling start-stop vehicles according to claim 1, characterized in that: the first one-way clutch (140) and the second one-way clutch (210) both have the same structure of one-way The main body of the clutch, the main body of the one-way clutch includes a star gear assembly, and the star gear assembly includes a star gear housing, a cover (220), and a circular gasket. 7. A one-way device for idling start-stop vehicles according to claim 6, characterized in that: the inner wall of the star gear housing is provided with a plurality of one-way clutch grooves (1010), and the one-way clutch grooves (1010 ) are arranged with a roller (1030) and a second spring (1020); the one-way clutch groove (1010) is composed of a second spring (1020) accommodating section and a roller (1030) accommodating section, and the roller (1030) accommodates The section outer circle of the section is sloped, and a limiting platform is arranged between the two adjacent receiving grooves. 8. A one-way device for idling start-stop vehicles according to claim 7, characterized in that: the roller (1030) is placed in the accommodation section of the roller (1030), and the second spring (1020) is located in the first In the accommodating section of the second spring (1020), one end of the second spring (1020) abuts against the roller (1030), and the other end abuts against the limit block; The opening end of the star gear housing is provided with a limit ring groove, and the end of the cover (150) is pressed into the limit ring groove. 9. A one-way device for idling start-stop vehicles according to claim 6, characterized in that: the inner wall of the star gear housing is provided with a plurality of one-way clutch grooves (1010), and the one-way clutch grooves (1010) is provided with a cylindrical push rod (1110) and two third springs (1120), and the length of the push rod is greater than the width of the spring, and the cross-section of the push rod head of the push rod is greater than the cross-sectional area of the spring.

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