A one-way device for automobiles used for idle start and stop

Abstract

The present invention relates to the field of automobile one-way devices, and in particular, to an automobile one-way device for idle start-stop. The one-way device in the prior art may have the defects of unstable power transmission, unsmooth meshing between the driving gear and the engine flywheel, or even stuck teeth when used for idle start-stop vehicles. The present invention provides an automobile one-way device for idle start-stop, including a one-way device body, the one-way device body includes a vertically arranged output shaft and a driving wheel assembly coaxially arranged in the middle section of the output shaft through a spiral spline, the upper end of the output shaft is connected to the starter motor through a first one-way clutch, and the lower end is coaxially installed with a cover through a second one-way clutch; the cover is an annular structure with a small bottom and a large top as a whole; the one-way device body in the present invention can grind the chamfer of the lower end of the driving gear, which plays an important role in the meshing process with the engine flywheel, during each starting process.

Description

Technical Field

[0001] The invention relates to the field of automobile one-way devices, in particular to an automobile one-way device for idling start and stop. Background Art

[0002] 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 driven by the generator and causing damage. 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.

[0003] According to surveys, in China's large and medium-sized cities and some coastal cities, the ratio of driving time to waiting for red lights or traffic jams is an average of 3:1, and in some cities it even reaches 5:2. With more than 10 million new cars pouring onto the road each year, urban roads will become more congested. It is conceivable how much fuel is wasted and how much toxic exhaust gas is produced by so many idling cars. Therefore, the idle start-stop system came into being. The working principle of this system is that when encountering a red light or traffic jam, the speed is less than 3km / h, the engine will automatically shut down. When the driver steps on the clutch, accelerator pedal or releases the brake again, the starter will quickly start the engine. It has the following main features:

[0004] ① Energy saving: Eliminate idling and save fuel consumed during idling time;

[0005] ② Environmental protection: After the engine is automatically shut down, the exhaust emissions are zero;

[0006] ③ Improve engine power output, thereby extending engine life: The inability to completely burn fuel when the car is idling is the main cause of engine carbon deposits. Engine carbon deposits will burn oil, increase energy consumption, and reduce engine power output.

[0007] As oil prices continue to rise, the economy of the car's idle start-stop system is becoming more and more obvious. Nowadays, the pressure on domestic traffic is getting greater and greater, and more and more people will own their own cars. Waiting for red lights at intersections has become commonplace, and idling while waiting for red lights has become a habit. According to surveys, a 1.6L car will consume 1.12L / h when idling for 3 minutes, which is equivalent to the fuel consumption of 1 kilometer in these 3 minutes. This is just the fuel consumption caused by one car. You can imagine how many vehicles there are in the country.

[0008] In order to adapt to the general trend of automobile energy conservation and emission reduction, most automobile manufacturers on the market have launched idle start-stop systems for various models. After the vehicle is matched with the start-stop system, the vehicle may start frequently; the frequent start of the vehicle means that the frequency of use of the automobile one-way device is greatly increased, so the idle start-stop automobile one-way device is required to be able to work stably and smoothly during the frequent start process and have good durability to meet the high requirements for the service life of the automobile one-way device due to frequent starts. When the existing automobile one-way device is used in a vehicle that has been matched with the idle start-stop system, due to the greatly increased starting frequency, it may cause the power transmission to be unstable and the meshing between the drive gear and the motor gear to be not smooth or even the teeth to be stuck, which affects the normal operation of the automobile one-way device. Summary of the invention

[0009] The invention aims at the defects of unstable power transmission, unsmooth meshing between the driving gear and the engine flywheel, and even stuck teeth when the one-way device in the prior art is used for an idle start-stop vehicle.

[0010] The present invention provides an idling start-stop automobile one-way device, comprising a one-way device body, the one-way device body comprising a vertically arranged output shaft and a driving wheel assembly coaxially arranged at the middle section of the output shaft through a spiral spline, the upper end of the output shaft is connected to a starter motor through a first one-way clutch, and the lower end is coaxially mounted with a cover through a second one-way clutch; the cover is an annular structure with a small bottom and a large top as a whole;

[0011] The driving wheel assembly includes a positioning protrusion, a driving gear and a fork portion arranged in sequence from bottom to top for cooperating with an external fork to drive the driving wheel assembly to move along the output shaft; the positioning protrusion is evenly formed with a plurality of transmission teeth along its circumference, the thickness of the driving gear is greater than the thickness of the engine flywheel, and a chamfer is formed at the lower end of the driving gear; a receiving groove for accommodating the positioning protrusion and the lower end of the driving gear is formed on the upper side of the cover; a grinding disc is provided on the upper inner wall of the receiving groove for grinding the chamfer of the lower end when the driving gear drives the engine flywheel to rotate.

[0012] During the driving process of a vehicle equipped with an idle start-stop system, frequent starting puts forward higher requirements on the stability of use, smooth operation and service life of the one-way device body; the one-way device body in the present invention can grind the chamfer of the lower end of the driving gear, which plays an important role in the meshing process with the engine flywheel, during each starting process, so that the driving gear can mesh with the engine flywheel more smoothly and stably; thus, the service life of the one-way device body can be better improved, and the smooth progress of the entire starting process can be better ensured. Since the lower end of the driving gear can be automatically chamfered and polished during each starting process, the frequency of manual grinding can be reduced, thereby reducing the labor burden.

[0013] Preferably, 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 positioning protrusion is evenly formed with a plurality of transmission teeth along its circumference, and the groove wall edges of the positioning groove are chamfered; when the driving wheel assembly moves axially until the positioning protrusion and the positioning groove cooperate, the grinding disc at the accommodating groove grinds the chamfer of the lower end of the driving gear; a retaining ring is installed at the end below the output shaft through a retaining spring to prevent the cover from falling off downward.

[0014] Preferably, 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 positioning protrusion is evenly formed with a plurality of transmission teeth along its circumference, and the groove wall edges of the positioning groove are chamfered; when the driving wheel assembly moves axially until the positioning protrusion and the positioning groove cooperate, the grinding disc at the accommodating groove grinds the chamfer of the lower end of the driving gear; a retaining ring is installed at the end below the output shaft through a retaining spring to prevent the cover from falling off downward.

[0015] Preferably, the grinding discs are triangular grinding discs, and the grinding discs are evenly arranged along the circumferential spacing of the upper inner wall of the accommodating groove.

[0016] The grinding disc adopts a triangular grinding disc, so as to better reduce the noise when the driving gear is chamfered and the grinding disc is grinding. At the same time, the grinding disc is evenly arranged along the circumferential spacing of the upper inner wall of the accommodating groove to ensure that the driving gear chamfer is fully ground, and the friction between the driving gear and the grinding disc does not generate excessive force on the driving gear and affect the normal rotation of the driving gear.

[0017] Preferably, the first one-way clutch and the second one-way clutch both have a one-way clutch body with the same structure, the one-way clutch body includes a planetary gear assembly, and the planetary gear assembly includes a planetary gear housing, a cover, and a circular gasket.

[0018] Preferably, the inner wall of the planetary gear housing is provided with a plurality of one-way clutch grooves, in which rollers and a second spring are arranged; the one-way clutch groove is composed of a second spring accommodating section and a roller accommodating section, the outer circle of the cross-section of the roller accommodating section is sloped, and a limited stop platform is provided between two adjacent one-way clutch grooves.

[0019] The outer ring of the roller accommodating section has a sloped cross-section. When the roller moves along the downhill section of the slope, the one-way clutch body realizes power transmission separation. When the roller moves along the uphill section of the slope, the roller is stuck in the roller accommodating section and power transmission is realized, thereby better realizing synchronous transmission or transmission separation between various transmission components.

[0020] Preferably, the roller is placed in the roller accommodating section, the second spring is located in the second spring accommodating section, one end of the second spring is against the roller, and the other end is against the limit stop; the cover is at the open end of the accommodating groove of the star gear housing, and a limiting ring groove is provided on the star gear housing, and the end of the cover is pressed into the limiting ring groove.

[0021] Preferably, the inner wall of the planetary gear housing is provided with a plurality of one-way clutch grooves, in which a cylindrical push rod and two third springs are provided, and the length of the push rod is greater than the width of the springs, and the cross-section of the push rod head is greater than the cross-sectional area of ​​the spring.

[0022] In the present invention, a cylindrical push rod and two third springs are used to replace the structure of the ball and spring in the prior art, thereby avoiding the direct impact of the roller on the spring, thereby protecting the spring; and the push rod length is greater than the third spring width, effectively avoiding the problem that the third spring shortens and deforms, causing the entire one-way clutch to slip and fail to work normally during use; the push rod head cross-section is greater than the cross-sectional area of ​​the spring, thereby avoiding the third spring from contacting the output shaft and causing friction to damage the spring. In addition, during the installation process, the first one-way clutch and the second one-way clutch can select a one-way clutch body of a corresponding appropriate size according to actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the isolator body in Example 1;

[0024] Figure 2 is a cross-sectional schematic diagram of the isolator body in Example 1;

[0025] Figure 3 This is a schematic diagram of the structure of the cover and the output shaft in Example 1;

[0026] Figure 4 is a schematic structural diagram of the driving wheel assembly in Example 1;

[0027] Figure 5 Schematic diagram of the structure of the isolator body in Example 2;

[0028] Figure 6 is a cross-sectional schematic diagram of the isolator body in Example 2;

[0029] Figure 7 This is a schematic diagram of the structure of the cover and the output shaft in Example 2;

[0030] Figure 8 is a schematic structural diagram of a driving wheel assembly in Example 2;

[0031] Fig. 9 is a cross-sectional schematic diagram of the planetary gear housing in Example 3;

[0032] Fig.10 is a schematic structural diagram of a cylindrical push rod and a third spring in Embodiment 4;

[0033] Fig.11 Another structural schematic diagram of the cylindrical push rod and the third spring in Example 4. DETAILED DESCRIPTION

[0034] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it. Example 1

[0035] Combination Figure 1-4 The present embodiment provides an automotive one-way device for idle start and stop, comprising a one-way device body 100, the one-way device body 100 comprising a vertically arranged output shaft 110 and a drive wheel assembly 120 coaxially arranged at the middle section of the output shaft 110 through a helical spline 130, the upper end of the output shaft 110 is connected to the starter motor through a first one-way clutch 140 for one-way transmission, the first one-way clutch 140 can preferably achieve synchronous rotation between the output shaft 110 and the starter motor and 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 mounted with a cover 150 through a second one-way clutch 210; the cover 150 is an annular structure with a small bottom and a large top as a whole; the second one-way clutch 210 can achieve one-way 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.

[0036] The driving wheel assembly 120 includes a positioning protrusion 121, a driving gear 122, and a fork portion 123 for cooperating with an external fork to drive the driving wheel assembly 120 to move along the output shaft 110, which are arranged in sequence from bottom to top; the positioning protrusion 121 is evenly formed with a plurality of transmission teeth along its circumference, the thickness of the driving gear 122 is greater than the thickness of the engine flywheel, and a chamfer is formed at the lower end of the driving gear 122; when the driving gear 122 drives the engine flywheel to rotate, a relatively stable power transmission can be achieved due to the large thickness of the driving gear 122. At the same time, the chamfer at the lower end of the driving gear 122 can make the meshing between the driving gear 122 and the engine flywheel smoother, thereby ensuring the stability of the entire starting process. The upper side of the cover 150 is formed with a receiving groove 151 for receiving the positioning protrusion 121 and the lower end of the driving gear 122; the upper inner wall of the receiving groove 151 is provided with a grinding disc 152 for grinding the chamfer of the lower end of the driving gear 122 when the engine flywheel is driven to rotate;

[0037] A receiving ring 160 is arranged in the accommodating groove 151 and is coaxially fixed to the output shaft 110. 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 evenly formed with a plurality of transmission teeth along its circumference, and the groove wall edges of the positioning groove 161 are chamfered; when the driving wheel assembly 120 moves axially until the positioning protrusion 121 and the positioning groove 161 match, the grinding disc 152 at the accommodating groove 151 grinds the chamfer of the lower end of the driving gear 122; a retaining ring 230 is installed at the end below the output shaft 110 through a retaining spring to prevent the cover 150 from falling off downward.

[0038] It can be understood that, on the one hand, power can be transmitted between the transmission teeth circumferentially of the positioning protrusion 121 and the receiving ring 160 formed with the positioning groove 161. Since the receiving ring 160 is fixed on the output shaft 110, the synchronous transmission between the positioning protrusion 121 and the receiving ring 160 can cooperate with the power transmission of the output shaft 110 to the drive wheel assembly 120 through the spline to ensure that the driving gear 122 and the output shaft 110 maintain stable synchronous rotation.

[0039] On the other hand, through the cooperation between the positioning protrusion 121 and the positioning groove 161, the fork portion 123 can be cooperated to position the two sides of the driving wheel assembly 120 in the axial direction respectively; thereby, the axial stability of the driving wheel assembly 120 can be better improved. Therefore, the axial stable positioning of the driving wheel assembly 120 can also effectively avoid the axial movement deviation of the driving gear 122, which causes the chamfer at the lower end of the driving gear 122 to fail to contact with the grinding plate 152 or excessive contact, thereby affecting the transmission. The situation can then be better ensured that the chamfer at the lower end of the driving gear 122 and the grinding plate 152 are stable.

[0040] In addition, since the thickness of the driving gear 122 is greater than the thickness of the engine flywheel, during the starting process, when the driving gear 122 finishes moving under the drive of the shift fork, the middle section of the driving gear 122 engages with the engine flywheel, and the lower end of the driving gear 122 only contacts the grinding plate 152 at the cover 150 in the circumferential direction but not the engine flywheel; therefore, the cover 150 will not interfere with the engine flywheel and will not affect the smooth and stable progress of the entire starting process.

[0041] Specifically, when the vehicle starts, the fork portion 123 cooperates with the external 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 assembly 120 will rotate slightly relative to the output shaft 110 when moving along the output shaft 110 so that the drive gear 122 in the drive wheel assembly 120 can stably mesh with the engine flywheel to drive the engine flywheel to rotate and complete the vehicle starting. When starting, the lower end of the drive gear 122 first contacts and meshes with the engine flywheel through the chamfer.

[0042] During the driving process of a vehicle equipped with an idle start-stop system, the driving gear 122 will frequently engage and disengage with the engine aircraft due to frequent starting. This can easily lead to uneven chamfers and affect the smooth engagement between the driving gear 122 and the engine flywheel. Compared with the prior art, a cover 150 is provided at the lower end of the output shaft 110 in the one-way clutch body 100 in this embodiment. When the driving gear 122 rotates with the output shaft 110, the cover 150 remains stationary, so that the chamfer at the lower end of the driving gear 122 and the grinding disc 152 at the upper inner wall of the cover 150 form a relative motion for grinding. Specifically, during each starting process, the grinding disc 152 can grind the chamfer to better keep the chamfer smooth and flat, thereby increasing the service life of the one-way clutch body 100.

[0043] In addition, it is worth noting that the grinding disc 152 in this embodiment is a triangular grinding disc, so that the noise during the chamfering of the driving gear 122 and grinding of the grinding disc 152 can be reduced. At the same time, the grinding discs 152 are evenly arranged at 30 degrees along the circumferential inner wall of the upper side of the accommodating groove 151 to ensure that the chamfer of the driving gear 122 is fully polished, and the friction between the driving gear 122 and the grinding disc 152 does not generate excessive force on the driving gear 122 and affect the normal rotation of the driving gear 122.

[0044] Therefore, during the driving process of a vehicle equipped with an idle start-stop system, frequent starting puts forward higher requirements on the use stability, working smoothness and working life of the one-way device body 100; the one-way device body 100 in this embodiment can grind the chamfer of 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; thus, the service life of the one-way device body 100 can be better improved, and the smooth progress of the entire starting process can be better ensured. Since the lower end of the driving gear 122 can be automatically chamfered and polished during each starting process, the frequency of manual grinding can be reduced, thereby reducing the labor burden. Example 2

[0045] Combination Figure 5-8 This embodiment provides an idle start-stop automobile one-way device, which is different from Embodiment 1 in that, in this embodiment, the upper inner wall of the accommodating groove 151 is not provided with a grinding plate 152; when the driving wheel assembly 120 moves axially to the point where the positioning protrusion 121 and the positioning groove 161 are matched, a lubrication assembly for lubricating the lower end of the driving gear 122 is formed at the accommodating groove 151.

[0046] A buffer ring 610 is coaxially movably arranged at the positioning groove 161 of the receiving ring 160, and the buffer ring 610 axially penetrates the receiving ring 160; the buffer ring 610 moves along the axial and circumferential directions relative to the receiving ring 160, and the outer wall of the buffer ring 610 on the side close to the driving gear 122 protrudes from the inner wall of the positioning groove 161 to form a protrusion; a sliding groove 1211 for slidingly cooperating with the buffer ring 610 is formed in the middle part of the positioning protrusion 121, and a rounded corner for accommodating the buffer ring 610 is formed on the side of the sliding groove 1211 close to the buffer ring 610, and the buffer ring 610 is abutted against the positioning protrusion 121 when the positioning protrusion 121 and the positioning groove 161 are matched; an extrusion ring 620 is abutted against the outer wall of the side of the buffer ring 610 far from the driving gear 122.

[0047] Specifically, when the shift fork drives the driving wheel assembly 120 to move along the output shaft 110, the positioning protrusion 121 pushes the buffer ring 610 axially. Since the buffer ring 610, the receiving ring 160 and the sliding groove 1211 of the positioning protrusion 121 are all circumferentially movable, when the buffer ring 610 is pushed axially by the positioning protrusion 121, no circumferential power transmission is formed between the buffer ring 610 and the positioning protrusion 121 and the receiving ring 160; therefore, the buffer ring 610, the positioning protrusion 121 and the receiving ring 160 can perform relative circumferential movement.

[0048] The lubrication assembly includes an annular storage bin 630 formed on one side of the cover 150 close to the extrusion ring 620 for receiving the extrusion ring 620 and storing lubricating oil; a refueling port for replenishing the lubricating oil is provided at the lower part of the storage bin 630, and 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 outer side of the storage bin 630 in the circumferential direction, and a plurality of first springs are evenly arranged along the circumferential direction between the lower bottom wall of the storage bin 630 and the extrusion ring 620; when the buffer ring 610 drives the extrusion ring 620 to move axially toward the storage bin 630, the extrusion ring 620 compresses the spring and presses the lubricating oil in the storage bin 630 into the oil pipeline 640, the inner walls of the extrusion ring 620 and the storage bin 630 that are in contact with each other are sealed, and a sealing ring is provided on the outer sleeve of the first spring to isolate the spring from the lubricating oil.

[0049] Specifically, when the buffer ring 610 drives the extrusion ring 620 to move axially, the extrusion 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 also receives the pressure given by the positioning protrusion 121. At this time, the buffer ring 610, the extrusion ring 620 and the bottom wall of the storage bin 630, that is, the cover 150, form a force-bearing whole. In the process of the positioning protrusion 121 rotating with the output shaft 110, 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 position stability of the first spring, the storage bin 630 and the oil pipeline 640. In addition, the first spring can also better reduce the axial impact of the driving wheel assembly 120 during the rotation process; thereby, the stability of the driving gear 122 during the rotation can be improved.

[0050] When the starting process is completed, the driving wheel assembly 120 moves and resets 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 extrusion ring 620 on the first spring is also eliminated, and the compressed first spring recovers and drives the extrusion ring 620 to move in the direction of moving out of the storage bin 630 and relieve the pressure on the lubricating oil.

[0051] An oil seepage bin 650 is formed at one end of the oil pipeline far from the storage bin 630, and an oil seepage outlet is provided at the lower end of the oil seepage bin 650, which is located at the outer wall of the upper end of the cover 150; an oil brush 710 for receiving the seepage lubricating oil is provided at the seepage outlet, and the lubricating oil pressed into the oil pipeline 640 by the extrusion ring 620 and slowly seeps onto the oil brush 710 at the outer wall of the upper end of the cover 150 through the oil seepage outlet. When the driving gear 122 rotates, the lower end of the driving gear 122 contacts the oil brush 710 and the lubricating oil is applied to its surface. The total volume of the oil seepage bin 650 and the oil pipeline 640 is greater than the storage volume of the lubricating oil in the oil storage bin.

[0052] Specifically, when the extrusion 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 seepage bin 650 and the oil delivery pipeline 640 is left with a margin compared to the oil storage bin, when the extrusion ring 620 presses the lubricating oil into the oil delivery pipeline 640, there will be no situation where the extrusion ring 620 cannot push the storage bin 630 due to insufficient volume or even affect the axial movement of the buffer ring 610 and the positioning protrusion 121. Thereafter, the lubricating oil slowly seeps onto the oil brush 710 at the outer wall of the upper end of the cover 150 through the oil seepage outlet. When the driving gear 122 rotates, the lower end of the driving gear 122 contacts the oil brush 710 and the lubricating oil is applied to its surface. 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 pipeline 640 under the action of gravity. When the lubricating oil is consumed to the point where the remaining amount cannot be pressed into the oil seepage bin 650, it can be manually replenished through the refueling port.

[0053] Therefore, during the driving process of a vehicle equipped with an idle start-stop system, frequent starting puts forward higher requirements on the use stability, working smoothness and working life of the one-way device body 100; the one-way device body 100 in this embodiment can lubricate the lower end of the driving gear 122 that first contacts and meshes with the engine flywheel during each starting process, so that the driving gear 122 can mesh with the engine flywheel more smoothly and stably to achieve power transmission; thereby, the service life of the one-way device body 100 can be better improved, and at the same time, the smooth progress of the entire starting process can be better ensured. Since the driving gear 122 can be automatically lubricated sufficiently during each starting process, the frequency of manual relubrication can be better reduced, thereby better reducing the labor burden. Example 3

[0054] Combination Fig. 9 Based on Example 1 or Example 2, this embodiment provides an idle start-stop automobile one-way device. In this embodiment, the first one-way clutch 140 and the second one-way clutch 210 both have a one-way clutch body with the same structure, and the one-way clutch body includes a planetary gear assembly, and the planetary gear assembly includes a planetary gear housing, a cover 220, and a round gasket; the cover 220 can better improve the installation stability of the one-way clutch body itself; the inner wall of the planetary 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 groove 1010 consists of a second spring 1020 accommodating section and a roller 1030 accommodating section, and the outer circle of the cross-section of the roller 1030 accommodating section is sloped, and a limited stop is provided between two adjacent one-way clutch grooves 1010;

[0055] The roller 1030 is placed in the roller 1030 accommodating section, the second spring 1020 is located in the second spring 1020 accommodating section, one end of the second spring 1020 is against the roller 1030, and the other end is against the limit stop platform; the cover 220 is at the open end of the accommodating groove of the star gear housing, and a limiting ring groove is provided on the star gear housing, and the end of the cover 150 is pressed into the limiting ring groove.

[0056] It can be understood that the cross-section outer ring of the roller 1030 accommodating section is sloped. When the roller 1030 moves along the downhill section of the slope, the one-way clutch body realizes power transmission separation. When the roller 1030 moves along the uphill section of the slope, the roller 1030 is stuck in the roller 1030 accommodating section and power transmission is realized, thereby better realizing synchronous transmission or transmission separation between various transmission components.

[0057] In this embodiment, when the first one-way clutch 140 is installed, the roller 1030 moves along the uphill section in the roller 1030 accommodating section when the starter motor drives the output shaft 110 to rotate synchronously, so as to ensure that the starter motor can stably drive the output shaft 110 to rotate, and the output shaft 110 cannot drive the starter motor to rotate in the reverse direction, thereby protecting the starter motor. When the second one-way clutch 210 is installed, the roller 1030 moves along the downhill section in the roller 1030 accommodating section when the output shaft 110 rotates driven by the starter motor, thereby ensuring that the power transmission between the output shaft 110 and the cover 150 is separated, and the output shaft 110 will not drive the cover 150 to rotate synchronously, thereby ensuring that the grinding sheet 152 in the accommodating groove 151 at the cover 150 and the driving gear 122 can form a relative motion to perform grinding. In addition, during the installation process, the first one-way clutch 140 and the second one-way clutch can select a one-way clutch body of a corresponding appropriate size according to actual conditions. Example 4

[0058] Combination Figure 10-11 Based on Example 1 or Example 2, this embodiment provides an idle start-stop automobile one-way device, which is different from Example 1 in that the first one-way clutch 140 and the second one-way clutch 210 in this embodiment both have a one-way clutch body, the one-way clutch body includes a planetary gear assembly, the planetary gear assembly includes a planetary gear housing, a cover 220, and a circular gasket; the inner wall of the planetary gear housing is provided with a plurality of one-way clutch grooves 1010, and a cylindrical push rod 1110 and two third springs 1120 are provided in the one-way clutch groove 1010, and the length of the push rod is greater than the tight width of the spring, and the cross-section of the push rod head is greater than the cross-sectional area of ​​the spring.

[0059] Specifically, compared with the prior art, the cylindrical push rod 1110 and two third springs 1120 are used to replace the structure of the ball and spring in the prior art in this embodiment, so that the roller 1030 can avoid direct impact on the spring, thereby protecting the spring; and the push rod length is greater than the third spring 1120 and the width is greater than the third spring 1120, which effectively avoids the problem that the entire one-way clutch cannot work normally due to the shortening and deformation of the third spring 1120 during use; the push rod head cross-section is greater than the cross-sectional area of ​​the spring, which avoids the third spring 1120 from contacting the output shaft 110 and causing friction and damage to the spring. In addition, during the installation process, the first one-way clutch 140 and the second one-way clutch 210 can select a one-way clutch body of a corresponding appropriate size according to actual conditions.

[0060] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0061] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A one-way device for idling start and stop of automobile, characterized in that: The invention comprises a one-way clutch body (100), the one-way clutch body (100) comprising a vertically arranged output shaft (110) and a drive wheel assembly (120) coaxially arranged at the middle section of the output shaft (110) via a helical spline (130); the upper end of the output shaft (110) is connected to a starter motor for one-way transmission via a first one-way clutch (140), and the lower end is coaxially mounted with a cover (150) via a second one-way clutch (210); the cover (150) is an annular structure with a smaller bottom and a larger top; The driving wheel assembly (120) comprises a positioning protrusion (121), a driving gear (122) and a shift fork portion (123) arranged in sequence from bottom to top for cooperating with an external shift fork to drive the driving wheel assembly (120) to move along the output shaft (110); the positioning protrusion (121) is evenly formed with a plurality of transmission teeth along its circumference; the thickness of the driving gear (122) is greater than the thickness of the engine flywheel; and a chamfer is formed at the lower end of the driving gear (122); a receiving groove (151) for receiving the positioning protrusion (121) and the lower end of the driving gear (122) is formed on the upper side of the cover (150); and a grinding disc (152) is provided on the upper inner wall of the receiving groove (151) for grinding the chamfer of the lower end of the engine flywheel when the driving gear (122) drives the engine flywheel to rotate.

2. The one-way device for idling start-stop of automobile according to claim 1, characterized in that: A receiving ring (160) coaxially fixed to the output shaft (110) is arranged in the receiving 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 evenly formed with a plurality of transmission teeth along its circumference, and the groove wall edges of the positioning groove (161) are all chamfered; when the driving wheel assembly (120) moves axially until the positioning protrusion (121) and the positioning groove (161) match, the grinding disc (152) at the receiving groove (151) grinds the chamfer of the lower end of the driving gear (122); and a retaining ring (230) for preventing the cover (150) from falling off downward is installed at the end below the output shaft (110) through a retaining ring.

3. The one-way device for idling start-stop of automobile according to claim 2, characterized in that: The grinding discs (152) are triangular grinding discs (152), and the grinding discs (152) are evenly arranged at intervals (30) degrees in the circumferential direction along the upper inner wall of the accommodating groove (151).

4. The one-way device for idling start-stop of automobile according to claim 1, characterized in that: The first one-way clutch (140) and the second one-way clutch (210) both have a one-way clutch body with the same structure, the one-way clutch body comprising a planetary gear assembly, and the planetary gear assembly comprising a planetary gear housing, a cover (220), and a round gasket.

5. The one-way device for idling start-stop of automobile according to claim 4, characterized in that: The inner wall of the planetary 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 composed of a second spring (1020) accommodating section and a roller (1030) accommodating section, the outer ring of the cross section of the roller (1030) accommodating section is sloped, and a limit stop is provided between two adjacent one-way clutch grooves (1010).

6. The one-way device for idling start-stop of automobile according to claim 5, characterized in that: The roller (1030) is placed in the roller (1030) accommodating section, the second spring (1020) is located in the second spring (1020) accommodating section, one end of the second spring (1020) is against the roller (1030), and the other end is against the limit stop platform; the cover (220) is at the open end of the accommodating groove of the star gear housing, a limit ring groove is provided on the star gear housing, and the end of the cover (150) is pressed into the limit ring groove.

7. The one-way device for idling start-stop of automobile according to claim 4, characterized in that: The inner wall of the planetary gear housing is provided with a plurality of one-way clutch grooves (1010), and a cylindrical push rod (1110) and two third springs (1120) are provided in the one-way clutch groove (1010), wherein the length of the push rod is greater than the width of the spring, and the cross-section of the push rod head is greater than the cross-sectional area of ​​the spring.

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