Automobile starter motor and one-way clutch structure

Abstract

The present invention discloses an automobile starter motor and a one-way clutch structure thereof. The automobile starter motor includes a one-way clutch structure, and the one-way clutch structure includes: a fixed sleeve ring, an inner gear ring and a planetary shaft. The inner gear ring is assembled on the inner wall of the fixed sleeve ring, and one side of the planetary shaft has an end face flange. A plurality of evenly distributed planetary gears are circumferentially mounted on the end face flange. The planetary shaft equipped with the planetary gears is sleeved inside the inner gear ring by the end face flange and then assembled in the fixed sleeve ring. In the above manner, the automobile starter motor and the one-way clutch structure of the present invention can optimize the one-way clutch installation structure, greatly shorten the axial distance of the one-way clutch assembly, and reduce the overall volume of the starter motor.

Description

Technical Field

[0001] The invention relates to the technical field of automobile starting motors, in particular to an automobile starting motor and a one-way clutch structure thereof. Background Art

[0002] The one-way clutch reduction assembly of the automobile starter motor is an important component of the starter motor. As long as it is a starter motor, there will be this type of one-way clutch reduction assembly inside it.

[0003] The power required by the starter motor to start the engine is decelerated by this type of one-way clutch reduction assembly and then the torque is increased to complete the power transmission. Therefore, the one-way clutch reduction assembly is an important component of the starter motor.

[0004] In the prior art, a general one-way clutch reduction assembly is mainly assembled by axially superimposing parts such as a one-way device, a planetary shaft, a planetary gear, and a pinch gear ring. This will cause the total axial length of the one-way clutch reduction assembly to be very long, and will occupy a large space of the starter motor. Summary of the invention

[0005] The main technical problem solved by the present invention is to provide an automobile starter motor and a one-way clutch structure thereof, which can optimize the one-way clutch installation structure, greatly shorten the axial distance of the one-way clutch assembly, and reduce the overall volume of the starter motor.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a one-way clutch structure, comprising:

[0007] Fixed ring,

[0008] The inner gear ring is assembled on the inner wall of the fixed ring.

[0009] The planetary shaft has an end face flange on one side, and multiple planetary gears are evenly distributed circumferentially mounted on the end face flange.

[0010] The planetary shaft equipped with planetary gears is sleeved inside the inner gear ring by means of the end face flange and then centrally assembled inside the fixed sleeve ring.

[0011] In a preferred embodiment of the present invention, the inner gear ring is concentrically arranged with the fixed sleeve ring, and the inner gear ring has an outer peripheral surface that can rotate in cooperation with the fixed sleeve ring and an inner tooth surface that can mesh with the planetary gear.

[0012] In a preferred embodiment of the present invention, a plurality of wedge-shaped positioning grooves are evenly distributed on the inner wall of the fixed ring, rollers and flat springs are arranged in the wedge-shaped positioning grooves, one end of the flat spring abuts against the roller, and the other end of the flat spring abuts against the side wall of the wedge-shaped positioning groove.

[0013] In a preferred embodiment of the present invention, the inner gear ring is assembled on the inner wall of the fixed ring through rollers and flat springs, the rollers are rollably arranged between the outer circumference of the inner gear ring and the inner wall of the fixed ring, and the inner gear ring can rotate freely relative to the fixed ring.

[0014] In a preferred embodiment of the present invention, a plurality of planetary shaft rollers are evenly distributed on the end face flange, each of the planetary shaft rollers is mounted with a rotatable planetary gear, the planetary gear is meshed with the inner tooth surface of the inner gear ring, and the end face flange equipped with the planetary gear is arranged inside the fixed ring.

[0015] In a preferred embodiment of the present invention, the flange end face of the planetary shaft is rotatably connected to the power input shaft, and a first bearing is installed inside the flange end face of the planetary shaft to support the power input shaft connected to the flange end face of the planetary shaft.

[0016] In a preferred embodiment of the present invention, a second bearing is installed inside the planetary gear, and the second bearing supports the planetary gear along the rotation direction.

[0017] In a preferred embodiment of the present invention, a third bearing is also installed on the planetary shaft to support the rotation direction of the planetary shaft. The third bearing is on the other side of the planetary shaft opposite to the flange end face and is assembled inside the fixed ring. The end face of the fixed ring is limited and fixed by a fixed sleeve pressing plate, and then the sealing setting is achieved by an oil seal.

[0018] In a preferred embodiment of the present invention, the first bearing, the second bearing and the third bearing are needle bearings.

[0019] In order to solve the above technical problem, another technical solution adopted by the present invention is: to provide a vehicle starting motor, including a one-way clutch structure.

[0020] The beneficial effects of the present invention are as follows: the automobile starter motor and the one-way clutch structure of the present invention can optimize the one-way clutch installation structure, greatly shorten the axial distance of the one-way clutch assembly, and reduce the overall volume of the starter motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0022] Figure 1 It is a structural schematic diagram of a preferred embodiment of the one-way clutch structure of the present invention;

[0023] Figure 2is a cross-sectional view of a preferred embodiment of the one-way clutch structure of the present invention;

[0024] Figure 3 It is a side view of a preferred embodiment of the one-way clutch structure of the present invention;

[0025] The components in the accompanying drawings are marked as follows: 1. first bearing, 2. planetary gear, 3. second bearing, 4. planetary shaft roller, 5. planetary shaft, 501, end face flange, 6. flat spring, 7. roller, 8. inner gear ring, 9. fixed sleeve ring, 901, wedge-shaped positioning groove, 10. fixed sleeve pressure plate, 11. third bearing, 12. oil seal. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 3 , the embodiment of the present invention includes:

[0028] Embodiment 1

[0029] A one-way clutch structure comprises: a fixed sleeve ring 9, an inner gear ring 8 and a planetary shaft 5, wherein the inner gear ring 8 is mounted on the inner wall of the fixed sleeve ring 9, and one side of the planetary shaft 5 is provided with an end face flange 501.

[0030] A plurality of evenly distributed planetary gears 2 are circumferentially mounted on the end face flange 501 . The planetary shaft 5 equipped with the planetary gears 2 is sleeved in the inner gear ring 8 by means of the end face flange 501 and then assembled in the fixed sleeve ring 9 .

[0031] The inner gear ring 8 is arranged concentrically with the fixed ring 9 , and the inner gear ring 8 has an outer peripheral surface that can rotate in cooperation with the fixed ring 9 and an inner tooth surface that can mesh with the planetary gear 2 .

[0032] A plurality of wedge-shaped positioning grooves 901 are evenly distributed on the inner wall of the fixed ring 9 , rollers 7 and flat springs 6 are arranged in the wedge-shaped positioning grooves 901 , one end of the flat spring 6 abuts against the roller 7 , and the other end of the flat spring 6 abuts against the side wall of the wedge-shaped positioning groove 901 .

[0033] The inner gear ring 8 is assembled on the inner wall of the fixed ring 9 through the roller 7 and the flat spring 6. The roller 7 is rollably arranged between the outer circumference of the inner gear ring 8 and the inner wall of the fixed ring 9. The inner gear ring 8 can rotate freely relative to the fixed ring 9.

[0034] The roller 7 and the flat spring 6 are placed in the wedge-shaped positioning groove 901. On the one hand, it can ensure that the installation structure between the inner ring 8 and the fixed ring 9 is more compact and reduce the installation volume. On the other hand, it can better position the roller 7 and the flat spring 6 and make it less likely to be damaged. In addition, the flat spring 6 can promote the rapid resetting of the roller 7 without collision, thereby ensuring the stability of the rotation between the inner ring 8 and the fixed ring 9.

[0035] A plurality of planetary shaft rollers 4 are evenly distributed on the end face flange 501, and a rotatable planetary gear 2 is installed on each of the planetary shaft rollers 4. The planetary gear 2 is meshed with the inner tooth surface of the inner gear ring 8. The end face flange 501 equipped with the planetary gear 2 is arranged inside the fixed ring 9, which optimizes the internal structure of the one-way clutch and reduces the assembly volume of the one-way clutch.

[0036] The flange end face 501 of the planetary shaft 5 is rotatably connected to the power input shaft. A first bearing 1 is installed inside the flange end face 501 of the planetary shaft 5 . The first bearing 1 supports the power input shaft connected to the flange end face 501 of the planetary shaft 5 .

[0037] A second bearing 3 is installed inside the planetary gear 2 , and the second bearing 3 supports the planetary gear 2 along the rotation direction.

[0038] A third bearing 11 is also installed on the planetary shaft 5 to support the rotation direction of the planetary shaft 5 , thereby improving the rotation stability of the planetary shaft 5 .

[0039] The third bearing 11 is mounted on the other side of the planetary shaft 5 opposite to the flange end face 501 and is assembled inside the fixed ring 9 . The end face of the fixed ring 9 is limited and fixed by the fixed sleeve pressing piece 10 , and then sealed by the oil seal 12 .

[0040] Among them, the first bearing 1, the second bearing 3 and the third bearing 11 are needle bearings. The needle bearings have a large contact area with the planetary gear 2 and the planetary shaft 5, and the assembly method is simple and the assembly effect is good. They are not easy to be damaged, ensuring that the one-way clutch works more stably and reliably.

[0041] In the one-way clutch, structures such as the inner ring gear 8, flat spring 6, roller 7, planetary shaft 5, planetary gear 7, planetary shaft roller 4 and assembled bearing are all confined in the internal structure of the fixed ring 9, that is, all components are concentratedly assembled in the fixed ring 9, which greatly optimizes the installation structure of the one-way clutch, greatly shortens the axial distance of the one-way clutch assembly, and reduces the overall volume of the starter motor.

[0042] Embodiment 2

[0043] A car starter motor includes a one-way clutch structure, which includes a fixed ring 9, an inner gear ring 8 and a planetary shaft 5. The inner gear ring 8 is assembled on the inner wall of the fixed ring 9, and one side of the planetary shaft 5 has an end face flange 501.

[0044] A plurality of evenly distributed planetary gears 2 are circumferentially mounted on the end face flange 501 . The planetary shaft 5 equipped with the planetary gears 2 is sleeved in the inner gear ring 8 by means of the end face flange 501 and then assembled in the fixed sleeve ring 9 .

[0045] The inner gear ring 8 is arranged concentrically with the fixed ring 9 , and the inner gear ring 8 has an outer peripheral surface that can rotate in cooperation with the fixed ring 9 and an inner tooth surface that can mesh with the planetary gear 2 .

[0046] A plurality of wedge-shaped positioning grooves 901 are evenly distributed on the inner wall of the fixed ring 9 , rollers 7 and flat springs 6 are arranged in the wedge-shaped positioning grooves 901 , one end of the flat spring 6 abuts against the roller 7 , and the other end of the flat spring 6 abuts against the side wall of the wedge-shaped positioning groove 901 .

[0047] The inner gear ring 8 is assembled on the inner wall of the fixed ring 9 through the roller 7 and the flat spring 6. The roller 7 is rollably arranged between the outer circumference of the inner gear ring 8 and the inner wall of the fixed ring 9. The inner gear ring 8 can rotate freely relative to the fixed ring 9.

[0048] The roller 7 and the flat spring 6 are placed in the wedge-shaped positioning groove 901. On the one hand, it can ensure that the installation structure between the inner ring 8 and the fixed ring 9 is more compact and reduce the installation volume. On the other hand, it can better position the roller 7 and the flat spring 6 and make it less likely to be damaged. In addition, the flat spring 6 can promote the rapid resetting of the roller 7 without collision, thereby ensuring the stability of the rotation between the inner ring 8 and the fixed ring 9.

[0049] A plurality of planetary shaft rollers 4 are evenly distributed on the end face flange 501, and a rotatable planetary gear 2 is installed on each of the planetary shaft rollers 4. The planetary gear 2 is meshed with the inner tooth surface of the inner gear ring 8. The end face flange 501 equipped with the planetary gear 2 is arranged inside the fixed ring 9, which optimizes the internal structure of the one-way clutch and reduces the assembly volume of the one-way clutch.

[0050] The flange end face 501 of the planetary shaft 5 is rotatably connected to the power input shaft. A first bearing 1 is installed inside the flange end face 501 of the planetary shaft 5 . The first bearing 1 supports the power input shaft connected to the flange end face 501 of the planetary shaft 5 .

[0051] A second bearing 3 is installed inside the planetary gear 2 , and the second bearing 3 supports the planetary gear 2 along the rotation direction.

[0052] A third bearing 11 is also installed on the planetary shaft 5 to support the rotation direction of the planetary shaft 5 , thereby improving the rotation stability of the planetary shaft 5 .

[0053] The third bearing 11 is mounted on the other side of the planetary shaft 5 opposite to the flange end face 501 and is assembled inside the fixed ring 9 . The end face of the fixed ring 9 is limited and fixed by the fixed sleeve pressing piece 10 , and then sealed by the oil seal 12 .

[0054] Among them, the first bearing 1, the second bearing 3 and the third bearing 11 are needle bearings. The needle bearings have a large contact area with the planetary gear 2 and the planetary shaft 5, and the assembly method is simple and the assembly effect is good. They are not easy to be damaged, ensuring that the one-way clutch works more stably and reliably.

[0055] In the automobile starter motor, all components in the one-way clutch are assembled in the fixed ring 9, which greatly optimizes the one-way clutch installation structure, greatly shortens the axial distance of the one-way clutch assembly, and reduces the overall volume of the starter motor.

[0056] The beneficial effects of the one-way clutch structure of the present invention are:

[0057] The components of the one-way clutch deceleration system of the automobile starter motor are optimized and designed, and all the components are assembled in a fixed ring, which greatly shortens the axial distance of the assembly and reduces the overall volume of the starter motor.

[0058] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A one-way clutch structure, characterized in that: include: Fixed ring, The inner gear ring is assembled on the inner wall of the fixed ring. The planetary shaft has an end face flange on one side, and multiple planetary gears are evenly distributed circumferentially mounted on the end face flange. The planetary shaft equipped with planetary gears is sleeved inside the inner gear ring by the end face flange and then assembled in the fixed ring; A plurality of planetary shaft rollers are evenly distributed on the end face flange, and a rotatable planetary gear is installed on each of the planetary shaft rollers. The planetary gear meshes with the inner tooth surface of the inner gear ring, and the end face flange equipped with the planetary gear is arranged inside the fixed sleeve ring; The flange end face of the planetary shaft is rotatably connected with the power input shaft, and a first bearing is also installed inside the flange end face, and the first bearing supports the power input shaft connected to the flange end face of the planetary shaft; A second bearing is installed inside the planetary gear, and the second bearing supports the planetary gear along the rotation direction; A third bearing is also installed on the planetary shaft to support the rotation direction of the planetary shaft. The third bearing is on the other side of the planetary shaft opposite to the flange end face and is assembled inside the fixed ring. The end face of the fixed ring is limited and fixed by the fixed sleeve pressing piece, and then the sealing setting is realized by the oil seal. The inner gear ring is concentrically arranged with the fixed ring, and has an outer peripheral surface that can rotate in cooperation with the fixed ring and an inner tooth surface that can mesh with the planetary gear. A plurality of wedge-shaped positioning grooves are evenly distributed on the inner wall of the fixed ring, and rollers and flat springs are arranged in the wedge-shaped positioning grooves. One end of the flat spring abuts against the roller, and the other end of the flat spring abuts against the side wall of the wedge-shaped positioning groove.

2. The one-way clutch structure according to claim 1, characterized in that: The inner gear ring is assembled on the inner wall of the fixed ring through rollers and flat springs. The rollers are rollably arranged between the outer circumference of the inner gear ring and the inner wall of the fixed ring. The inner gear ring can rotate freely relative to the fixed ring.

3. The one-way clutch structure according to claim 1, characterized in that: The first bearing, the second bearing and the third bearing are needle roller bearings.

4. An automobile starting motor, characterized in that: The automobile starter motor comprises the one-way clutch structure as claimed in any one of claims 1 to 3.

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