Planetary reduction isolator assembly with double clamping rings and double gear sleeves

Abstract

The utility model discloses a double-retainer-ring double-gear-sleeve planetary reduction isolator assembly, which relates to the technical field of starters and comprises an isolator, a planetary shaft, a planetary gear, a mounting frame assembly, a reduction gear ring, a first retainer ring gear sleeve mechanism and a second retainer ring gear sleeve mechanism. The isolator comprises a driving gear and an isolator body, and the driving gear is movably assembled at the front end of the isolator body through the first clamping ring retaining sleeve mechanism. The second clamping ring retaining sleeve mechanism is assembled at the front end of the planet shaft and located in front of the isolator to limit the axial position of the isolator. The driving gear is movably limited at the front end of the isolator body through the first clamping ring stop sleeve mechanism, when the driving gear makes contact with an engine flywheel, due to the fact that the driving gear is movably assembled, a certain distance can be buffered, direct hard contact between the driving gear and the flywheel is avoided, and the service life of the driving gear is prolonged. The axial position of the isolator is limited by the second clamping ring stop sleeve mechanism, and the isolator is prevented from moving forwards excessively.

Description

Technical Field

[0001] The utility model relates to the technical field of starters, and more specifically to a double-clamp ring and double-gear sleeve planetary speed reduction one-way device assembly. Background Art

[0002] A starter, also known as a motor, converts electrical energy into mechanical energy, driving the engine's flywheel to start the engine. Starters are categorized by their operating principle, including DC starters, gasoline starters, and compressed air starters. Internal combustion engines primarily use DC starters, characterized by their compact structure, simple operation, and ease of maintenance. DC starters are specifically designed for engine starting and require strong torque, drawing large currents of several hundred amperes.

[0003] Currently, automobile engines are started using external force, most commonly through a DC starter. In a DC starter, the armature rotates at a high speed, but its output torque is low. To increase the starter's output torque, a reduction mechanism is often connected to the armature's output end. This allows the starter to output higher torque, which is then transmitted to the planetary shaft, a one-way clutch, and a drive gear. The drive gear then drives the engine's flywheel.

[0004] Patent publication number CN218071243U discloses a new permanent magnet DC starter with an electromagnetic switch, relating to the field of DC starter technology. The system comprises a front cover, a one-way clutch assembly, a stator, an armature, a rear cover, an electromagnetic switch, and a shift fork. The front cover is provided with radial locating grooves for the ring gear, radial locating grooves for the stator, and assembly screw holes A. The one-way clutch assembly is provided with radial locating bosses A that mate with the radial locating grooves for the ring gear, and the stator is provided with radial locating bosses B that mate with the radial locating grooves for the stator. The armature is disposed within the stator and is in driving connection with the one-way clutch assembly. The rear cover is disposed behind the stator and armature. The electromagnetic switch is secured via holes and bolts in the front cover. The shift fork's top end is connected to the electromagnetic switch, while its other end is connected to the one-way clutch assembly. This new system saves assembly time by utilizing locating bosses and holes in multiple components. Furthermore, the electromagnetic switch used in the starter has a relatively simpler structure compared to previous starters.

[0005] In the above prior art, for its unidirectional device, such as Figure 3 As shown, the one-way clutch body and its driving gear are an integrated structure. The integrated one-way clutch structure is difficult to manufacture. At the same time, when the integrated one-way clutch structure contacts the engine flywheel, there is no buffer and direct hard contact, which can easily damage the driving gear after long-term use. Utility Model Content

[0006] In order to overcome the defects in the above-mentioned prior art, the purpose of the present invention is to provide a double-clamping ring double-speed sleeve planetary reduction one-way device assembly to solve the problems existing in the above-mentioned integrated one-way device structure in the prior art.

[0007] In order to achieve the above objectives, the technical solution adopted by this utility model is:

[0008] A double-clamping ring and double-gear sleeve planetary reduction one-way device assembly, comprising a one-way device, a planetary shaft, a planetary gear, a mounting frame assembly, a reduction gear ring, a first clamping ring and gear sleeve mechanism, and a second clamping ring and gear sleeve mechanism;

[0009] The one-way device is mounted on the planetary shaft and can slide axially relative to the planetary shaft. A horizontally penetrating planetary shaft hole is provided in the one-way device. The planetary shaft is mounted on the mounting frame assembly and passes through the planetary shaft hole. A plurality of planetary gears are provided and mounted on the rear end of the planetary shaft. The plurality of planetary gears are located in a reduction gear ring. The reduction gear ring is mounted on the mounting frame assembly and meshes with the plurality of planetary gears.

[0010] The one-way device includes a driving gear and a one-way device body. The driving gear is movably assembled at the front end of the one-way device body through the first clamping ring and gear sleeve mechanism; the second clamping ring and gear sleeve mechanism is assembled at the front end of the planetary shaft and is located in front of the one-way device to limit the axial position of the one-way device.

[0011] Preferably, the first collar and sleeve mechanism comprises a one-way device collar, a one-way device sleeve and a buffer spring;

[0012] The one-way device clamping ring is assembled on the outer side wall of the front end of the one-way device body and is located in front of the driving gear, and the one-way device gear sleeve is assembled on the one-way device clamping ring; the left side of the driving gear is against the one-way device gear sleeve, and a buffer cavity is provided on the inner side of the right part of the driving gear. The stepped sliding on the outside of the one-way device body is set in the buffer cavity, and the buffer spring is located in the buffer cavity and is against the stepped surface on the outside of the one-way device body.

[0013] Preferably, the second clamping ring and gear sleeve mechanism includes a planetary shaft clamping ring and a planetary shaft gear sleeve, the planetary shaft clamping ring is assembled on the outer side wall of the front end of the planetary shaft, and the planetary shaft gear sleeve is assembled on the planetary shaft clamping ring to limit the one-way device body from continuing to move leftward.

[0014] Preferably, a plug-in mounting piece is further provided on the right side of the isolator body, and a fork mounting area is provided on the plug-in mounting piece.

[0015] Preferably, the planetary shaft includes a shaft body, a shaft disc and a gear shaft; the shaft disc is located at the rear end of the shaft body, the gear shaft is provided with a plurality of and is assembled on the shaft disc, and the planetary gear is assembled on the gear shaft.

[0016] Preferably, a shaft clamping ring is installed on the shaft body, an adjustment pad is installed between the right side of the shaft clamping ring and the left side of the mounting frame assembly, and a friction-reducing pad is installed between the right side of the mounting frame assembly and the left side of the shaft disc.

[0017] Preferably, an annular latching tooth is provided on the right side of the mounting frame assembly, an annular latching groove is provided on the left side of the reduction gear ring, and the annular latching tooth is assembled on the annular latching groove.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a double-clamping-ring and double-gear sleeve planetary reduction one-way device assembly, which is provided with a first clamping-ring and gear sleeve mechanism and a second clamping-ring and gear sleeve mechanism for limiting the driving gear and the one-way device body respectively. The first clamping-ring and gear sleeve mechanism limits the driving gear at the front end of the one-way device body. When the driving gear contacts the engine flywheel, the driving gear is movably assembled to buffer a distance, thereby avoiding direct hard contact between the driving gear and the flywheel and extending its service life; the second clamping-ring and gear sleeve mechanism limits the axial position of the one-way device to avoid it from moving forward excessively.

[0020] The double-clamp double-gear sleeve planetary reduction one-way device assembly provided by the utility model has a remarkable feature in its double-clamp double-gear sleeve structure compared with similar products. The one-way device is a split structure, composed of a drive gear and a one-way device body. The drive gear is assembled on the one-way device body through the one-way device clamp ring, the one-way device gear sleeve and the buffer spring. Therefore, the one-way device itself has relatively more parts. A planetary shaft clamp ring and a planetary shaft gear sleeve are also designed axially on the planetary shaft to axially limit the axial position of the one-way device drive gear and the one-way device body. In this way, there are two sets of clamp rings and gear sleeves, which are suitable for new Denso series starters. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a double-clamping ring and double-gear sleeve planetary reduction one-way device assembly of the utility model;

[0022] Figure 2 This is a schematic diagram of the utility model one-way device;

[0023] Figure 3 This is a schematic diagram of the planetary shaft of the utility model;

[0024] Figure 4 This is a schematic diagram of the mounting bracket assembly of the utility model;

[0025] Figure 5 This is a schematic diagram of the reduction gear ring of the utility model;

[0026] Reference numerals:

[0027] 1. One-way device; 11. Drive gear; 12. One-way device body; 13. Plug-in mounting parts; 14. Fork mounting area; 2. Planetary shaft; 21. Shaft body; 22. Shaft disc; 23. Gear shaft; 3. Planetary gear; 4. Mounting frame assembly; 41. Annular clamping teeth; 5. Reduction gear ring; 51. Annular clamping groove; 6. First clamping ring and gear sleeve mechanism; 61. One-way device clamping ring; 62. One-way device gear sleeve; 63. Buffer spring; 7. Second clamping ring and gear sleeve mechanism; 71. Planetary shaft clamping ring; 72. Planetary shaft gear sleeve; 8. Shaft clamping ring; 9. Adjustment pad; 10. Friction-reducing pad. DETAILED DESCRIPTION

[0028] The following will provide a clear and complete description of the concept, specific structure and technical effects of the present invention in conjunction with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present invention.

[0029] A double-ring double-gear sleeve planetary reduction one-way device assembly, such as Figure 1 As shown, it includes a one-way device 1, a planetary shaft 2, a planetary gear 3, a mounting frame assembly 4, a reduction gear ring 5, a first clamping ring and gear sleeve mechanism 6 and a second clamping ring and gear sleeve mechanism 7;

[0030] The one-way device 1 is assembled on the planetary shaft 2 and can slide axially relative to the planetary shaft 2. A horizontal planetary shaft hole is provided in the one-way device 1. The planetary shaft 2 is assembled on the mounting frame assembly 4 and passes through the planetary shaft hole. A plurality of planetary gears 3 are provided and assembled on the rear end of the planetary shaft 2. The plurality of planetary gears 3 are located in the reduction gear ring 5. The reduction gear ring 5 is assembled on the mounting frame assembly 4 and meshes with the plurality of planetary gears 3.

[0031] The one-way device 1 includes a driving gear 11 and a one-way device body 12. The driving gear 11 is movably assembled at the front end of the one-way device body 12 through a first clamping ring and gear sleeve mechanism 6; the second clamping ring and gear sleeve mechanism 7 is assembled at the front end of the planetary shaft 2 and is located in front of the one-way device 1 to limit the axial position of the one-way device 1.

[0032] In this embodiment, a first clamping ring gear sleeve mechanism 6 and a second clamping ring gear sleeve mechanism 7 are provided to limit the driving gear 11 and the one-way device body 12 respectively. The first clamping ring gear sleeve mechanism 6 limits the driving gear 11 at the front end of the one-way device body 12. When the driving gear 11 contacts the flywheel, the driving gear 11 is movably assembled and can be buffered for a distance, thereby avoiding direct hard contact between the driving gear 11 and the flywheel and extending its service life; the second clamping ring gear sleeve mechanism 7 limits the axial position of the one-way device body 12 to prevent it from moving forward excessively.

[0033] Furthermore, in the prior art, to reduce direct, hard contact between the drive gear and the flywheel, a better material could be used to manufacture the drive gear. However, since the drive gear and the one-way clutch are an integrated structure, the one-way clutch is also made of the same material, resulting in higher costs. This embodiment adopts a split structure and provides a buffer distance, which reduces the material requirements for the drive gear, thereby reducing equipment costs.

[0034] In this embodiment, the entire structure is primarily supported by the mounting frame assembly 4 and the planetary shaft 2, which is secured to the starter via the starter front cover stator. Planetary gears 3 are mounted on the pins of the planetary shaft 2, with their external teeth meshing with the internal teeth of the reduction gear ring 5, which in turn meshes with the armature teeth of the armature.

[0035] like Figure 1 and 2 As shown, the first clamping ring and gear sleeve mechanism 6 includes a isolator clamping ring 61 , a isolator gear sleeve 62 and a buffer spring 63 .

[0036] The one-way device clamping ring 61 is assembled on the outer side wall of the front end of the one-way device body 12 and is located in front of the driving gear 11. The one-way device gear sleeve 62 is assembled on the one-way device clamping ring 61; the left side of the driving gear 11 is against the one-way device gear sleeve 62, and a buffer cavity is provided on the inner side of the right part of the driving gear 11. The stepped sliding on the outside of the one-way device body 12 is set in the buffer cavity. The buffer spring 63 is located in the buffer cavity and is against the stepped surface on the outside of the one-way device body 12.

[0037] In this embodiment, the one-way device retaining ring 61 and the one-way device gear sleeve 62 limit the driving gear 11 at the front end of the one-way device body 12; the buffer spring 63, the buffer cavity and the steps on the outside of the one-way device body 12 limit the driving gear 11 at the rear end of the one-way device body 12. At the same time, the driving gear 11 can be buffered for a distance, avoiding direct hard contact between the driving gear 11 and the flywheel.

[0038] In this embodiment, the drive gear 11 is connected to the one-way clutch body 12 via knurled linear keys on both sides. The drive gear is radially positioned on the one-way clutch body 12. The drive gear 11 is axially secured to the one-way clutch body 12 via a one-way clutch collar 61, a one-way clutch sleeve 62, and a buffer spring 63. The one-way clutch body 12 and the drive gear 11 are integrally connected. The front end of the planetary shaft 2 is fixed to the front cover using a hole-shaft mounting system, while the other end of the planetary shaft is fixed to the mounting bracket assembly 4.

[0039] like Figure 1 As shown, the second clamping ring and gear sleeve mechanism 7 includes a planetary shaft clamping ring 71 and a planetary shaft gear sleeve 72. The planetary shaft clamping ring 71 is assembled on the outer side wall of the front end of the planetary shaft 2, and the planetary shaft gear sleeve 72 is assembled on the planetary shaft clamping ring 71 to limit the one-way device body 12 from continuing to move to the left, that is, to limit the leftward movement of the one-way device body 12, and limit the axial position of the one-way device and its front end.

[0040] like Figure 1 and 2 As shown, a plug-in mounting member 13 is further provided on the right side of the isolator body 12, and a shift fork mounting area 14 is provided on the plug-in mounting member 13. The shift fork is assembled in the shift fork mounting area 14, and the shift fork drives the isolator 1 to move left or right on the planetary shaft 2.

[0041] like Figure 3 As shown, the planetary shaft 2 includes a shaft body 21, a shaft disc 22 and a gear shaft 23; the shaft disc 22 is located at the rear end of the shaft body 21, the gear shaft 23 is provided with several and assembled on the shaft disc 22, and the planetary gear 3 is assembled on the gear shaft 23.

[0042] like Figure 1 As shown, a shaft collar 8 is mounted on the shaft body 21. An adjustment pad 9 is mounted between the right side of the shaft collar 8 and the left side of the mounting bracket assembly 4. A friction-reducing pad 10 is mounted between the right side of the mounting bracket assembly 4 and the left side of the shaft disc 22. The shaft collar 8 is used to axially limit the position of the rear end of the isolator 1. The adjustment pad 9 is used to adjust the axial position of the reduction gear ring 5 on the planetary shaft 2. The friction-reducing pad 10 is used to reduce wear on the mounting bracket assembly 4.

[0043] like Figure 4 and 5 As shown, an annular latch 41 is provided on the right side of the mounting frame assembly 4, and an annular latch groove 51 is provided on the left side of the reduction gear ring 5. The annular latch 41 is assembled on the annular latch groove 51. The reduction gear ring 5 and the mounting frame assembly 4 are fixed to the mounting frame assembly 4 through the teeth and grooves.

[0044] In order to better understand the present invention, the following is a complete description of the working principle of the present invention:

[0045] When the S terminal of the electromagnetic switch is energized, current flows through its coil, generating a magnetic field in which the armature is magnetized. The two move in opposite directions and attract each other, causing the armature to move toward the B+ terminal of the electromagnetic switch, thereby driving the upper part of the switch fork to move in the same direction as the armature, and the lower part of the switch fork moves in the opposite direction through the rotating fulcrum, and pushes the one-way device 1 to move toward the engine flywheel until the drive gear 11 of the one-way device 1 engages with the engine flywheel.

[0046] At this time, the moving ring on the armature in the switch contacts the B+ and M terminals of the electromagnetic switch, short-circuiting the switch coil. B+, M, the positive carbon brush of the brush holder assembly, the commutator, the armature coil, the negative carbon brush of the brush holder assembly, and the bottom plate of the brush holder assembly are grounded to form a path. Since the switch coil is short-circuited, the resistance of this path is all in the milliohm level. The resistance is very small and the current is very large. The armature coil generates a large torque, which is transmitted to the planetary gear 3 through the armature teeth. The planetary gear 3 meshes with the reduction ring gear 5 and transmits the torque to the reduction ring gear 5. Since the reduction ring gear 5 is fixed and does not rotate, only the planetary gear 3 rotates along the inner circle of the reduction ring gear 5, driving the planetary shaft 2 to rotate, and the splines on the planetary shaft 2 mesh with the splines inside the one-way device body 12, transmitting the torque to the one-way device body 12. The one-way device body 12 transmits the torque to the drive gear 11, and the drive teeth transmit the torque of 11 to the meshing flywheel, thereby driving the flywheel to rotate and achieve ignition.

[0047] The above is a detailed description of the implementation methods of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalents or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A double-clamp double-gear planetary reduction one-way gear assembly, characterized in that: It comprises a one-way device (1), a planetary shaft (2), a planetary gear (3), a mounting frame assembly (4), a reduction gear ring (5), a first clamping ring and a gear sleeve mechanism (6), and a second clamping ring and a gear sleeve mechanism (7); The one-way device (1) is mounted on the planetary shaft (2) and can slide axially relative to the planetary shaft (2). A horizontally penetrating planetary shaft hole is provided in the one-way device (1). The planetary shaft (2) is mounted on the mounting frame assembly (4) and passes through the planetary shaft hole. A plurality of planetary gears (3) are provided and mounted on the rear end of the planetary shaft (2). The plurality of planetary gears (3) are located in a reduction gear ring (5). The reduction gear ring (5) is mounted on the mounting frame assembly (4) and meshes with the plurality of planetary gears (3). The one-way device (1) comprises a driving gear (11) and a one-way device body (12); the driving gear (11) is movably assembled at the front end of the one-way device body (12) via the first clamping ring and gear sleeve mechanism (6); the second clamping ring and gear sleeve mechanism (7) is assembled at the front end of the planetary shaft (2) and is located in front of the one-way device (1) to limit the axial position of the one-way device (1).

2. The planetary reduction one-way gear assembly according to claim 1, characterized in that: The first clamping ring and gear sleeve mechanism (6) comprises a one-way device clamping ring (61), a one-way device gear sleeve (62) and a buffer spring (63); The one-way device clamping ring (61) is mounted on the outer side wall of the front end of the one-way device body (12) and is located in front of the driving gear (11), and the one-way device gear sleeve (62) is mounted on the one-way device clamping ring (61); the left side of the driving gear (11) is against the one-way device gear sleeve (62), and a buffer cavity is provided on the inner side of the right part of the driving gear (11). The stepped sliding on the outer side of the one-way device body (12) is provided in the buffer cavity, and the buffer spring (63) is located in the buffer cavity and is against the stepped surface on the outer side of the one-way device body (12).

3. The planetary reduction one-way gear assembly according to claim 1, characterized in that: The second clamping ring and gear sleeve mechanism (7) comprises a planetary shaft clamping ring (71) and a planetary shaft gear sleeve (72), wherein the planetary shaft clamping ring (71) is mounted on the outer side wall of the front end of the planetary shaft (2), and the planetary shaft gear sleeve (72) is mounted on the planetary shaft clamping ring (71) to limit the one-way device body (12) from continuing to move leftward.

4. The planetary reduction one-way device assembly according to claim 1, characterized in that: A plug-in installation component (13) is also provided on the right side of the isolator body (12), and a fork installation area (14) is provided on the plug-in installation component (13).

5. The planetary reduction one-way gear assembly according to claim 1, characterized in that: The planetary shaft (2) comprises a shaft body (21), a shaft disc (22) and a gear shaft (23); the shaft disc (22) is located at the rear end of the shaft body (21); the gear shaft (23) is provided with a plurality of gears and is assembled on the shaft disc (22); and the planetary gear (3) is assembled on the gear shaft (23).

6. The planetary reduction one-way device assembly according to claim 5, characterized in that: A shaft clamping ring (8) is mounted on the shaft body (21), an adjustment pad (9) is mounted between the right side of the shaft clamping ring (8) and the left side of the mounting frame assembly (4), and a friction-reducing pad (10) is mounted between the right side of the mounting frame assembly (4) and the left side of the shaft disc (22).

7. The planetary reduction one-way gear assembly according to claim 1, characterized in that: An annular clamping tooth (41) is provided on the right side of the mounting frame assembly (4), an annular clamping groove (51) is provided on the left side of the reduction gear ring (5), and the annular clamping tooth (41) is assembled on the annular clamping groove (51).

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