Isolator assembly for starting and stopping motor

Abstract

The utility model discloses an isolator assembly for a start-stop motor, which relates to the technical field of start-stop motors and comprises an isolator, a driving gear, a planet shaft, a planet gear, a box body, a gear ring support and a speed reduction gear ring. The isolator is assembled on the planet shaft and can axially slide relative to the planet shaft, the driving gear is assembled at the front end of the isolator, the planet shaft penetrates through the box body, and a plurality of planet gears are assembled at the rear end of the planet shaft; the gear ring support is assembled on the box body, the speed reduction gear ring is assembled on the gear ring support, the planetary gear is located in the speed reduction gear ring and meshed with the speed reduction gear ring, the integrated speed reduction gear ring structure is divided into the box body, the gear ring support and the speed reduction gear ring, the box body is used for assembling the planetary shaft, the gear ring support is assembled on the box body, and the speed reduction gear ring is assembled on the gear ring support. The speed reduction gear ring is meshed with the planetary gear; the split-type arrangement is relatively easy to process and manufacture, and can be made of different materials, and compared with an integrated structure which is made of metal materials, the cost is relatively low.

Description

Technical Field

[0001] The utility model relates to the technical field of start-stop motors, and more particularly to a one-way device assembly for a start-stop motor. Background Art

[0002] A car start-stop motor is a device used to save energy and reduce emissions, automatically shutting down and starting the engine during vehicle start-stop times. Its primary function is to shut down the engine when the vehicle is stopped, saving energy and improving fuel economy and environmental performance. It then automatically restarts the engine when the vehicle needs to be started.

[0003] The one-way clutch assembly is a component inside the start-stop motor. Its function is to drive the gear at its front end to move laterally and rotate laterally through lateral movement and rotation. The lateral movement engages with the engine, and the rotation drives the engine to rotate, completing the engine starting work.

[0004] Patent publication number CN215762000U discloses a planetary reduction DC starter for automobile engines. The starter comprises a housing, an electromagnetic switch, a shift fork mechanism, a stator mechanism, a brush holder assembly, an armature, a planetary reduction mechanism, and a one-way transmission mechanism. The electromagnetic switch is connected to the shift fork mechanism and controls its rotation. The shift fork mechanism is connected to the one-way transmission mechanism and drives the one-way transmission mechanism to extend or retract. The stator mechanism is electrically connected to the electromagnetic switch and the armature, respectively. One end of the armature is located within the brush holder assembly, and the other end is located within the planetary reduction mechanism and drives the planetary reduction mechanism to rotate. The planetary reduction mechanism is connected to the one-way transmission mechanism. When starting the automobile engine, the electromagnetic switch rotates the shift fork mechanism, which in turn extends the one-way transmission mechanism, causing it to engage with the engine's flywheel. Simultaneously, the armature rotates, driving the planetary reduction mechanism, which in turn drives the one-way transmission mechanism, thereby driving the engine's flywheel.

[0005] The starter disclosed in the above patent, whose planetary reduction mechanism and one-way transmission mechanism constitute a one-way device assembly, has the following defects:

[0006] 1. The reduction gear ring is a one-piece structure, used to assemble the planetary shaft on one hand and mesh with the planetary gear on the other. One-piece reduction gear rings are difficult to manufacture and are also made of the same metal, which is expensive.

[0007] 2. For the reduction gear ring, its right side is against the end face of the planetary gear shaft, and there is a gap between the left side and the clamping ring, resulting in the reduction gear ring and the planetary gear shaft not being fixed in the axial direction. Utility Model Content

[0008] In order to overcome the defects existing in the above-mentioned prior art, the purpose of the present utility model is to provide a one-way device assembly for a start-stop motor to solve the problems existing in the reduction gear ring in the above-mentioned prior art.

[0009] In order to achieve the above objectives, the technical solution adopted by this utility model is:

[0010] A one-way device assembly for a start-stop motor includes a one-way device, a driving gear, a planetary shaft, a planetary gear, a housing, a ring gear bracket, a reduction ring gear, a clamping ring, an adjustment pad, and a friction-reducing pad;

[0011] The one-way device is assembled on the planetary shaft and can slide axially relative to the planetary shaft. The driving gear is assembled on the front end of the one-way device. The planetary shaft passes through the housing and is assembled with a plurality of planetary gears at the rear end. The ring gear bracket is assembled on the housing. The reduction ring gear is assembled on the ring gear bracket. The planetary gears are located in the reduction ring gear and mesh with the reduction ring gear.

[0012] A first slot is provided on the planetary shaft, and the inner end of the clamping ring is assembled in the first slot. When the one-way device moves backward to the extreme position, the one-way device abuts against the left side of the clamping ring; the right side of the box body abuts against the end face of the planetary shaft, and the adjustment pad and the friction-reducing pad are assembled between the left side of the box body and the right side of the clamping ring.

[0013] Preferably, an adjustment pad, a friction-reducing pad and an adjustment pad are sequentially pressed against the left side of the box body and the right side of the clamping ring.

[0014] Preferably, an annular clamping plate is provided in the box body, an annular clamping groove is provided at the front end of the ring gear bracket, and a ring gear clamping groove is provided at the rear end, the annular clamping plate is assembled in the annular clamping groove, and the reduction ring gear is assembled in the ring gear clamping groove.

[0015] Preferably, the front end of the isolator is provided with a second card slot, the rear end is provided with a third card slot, the third card slot is equipped with a shift fork card block, and a shift fork slot is formed between the shift fork card block and the stepped surface of the isolator.

[0016] Preferably, a planet shaft hole is provided in the one-way device, and the planet shaft is assembled in the planet shaft hole through a straight key.

[0017] Preferably, a wire clamping ring is mounted on the second clamping groove, a retaining ring is mounted on the wire clamping ring, and the retaining ring abuts against the front end surface of the driving gear.

[0018] Preferably, a spring slot is provided at the rear end of the driving gear, a buffer spring is installed in the spring slot, and the buffer spring abuts against the stepped surface of the isolator.

[0019] Preferably, the planetary shaft includes a shaft body, a planetary gear mounting plate and several planetary gear mounting shafts, the planetary gear mounting plate is located at the rear end of the shaft body, the several planetary gear mounting shafts are assembled on the planetary gear mounting plate, and the planetary gears are assembled on the planetary gear mounting shafts.

[0020] Preferably, the clamping ring is an open clamping ring.

[0021] Preferably, the ring gear bracket is made of plastic material, and the reduction ring gear is made of metal material.

[0022] Beneficial effects of the utility model:

[0023] The one-way device assembly for the start-stop motor provided by the utility model splits the integrated reduction ring gear structure into a housing, a ring gear bracket, and a reduction ring gear split structure. The housing is used to assemble the planetary shaft, the ring gear bracket is assembled on the housing, and the reduction ring gear is then assembled on the ring gear bracket, and the reduction ring gear is then engaged with the planetary gear. The split setting is relatively easy to process and manufacture, and can be made of different materials. For example, the ring gear bracket can be made of plastic, and the housing and the reduction ring gear can be made of metal. Compared with the integrated structure using metal materials, the cost is relatively low.

[0024] The utility model provides a one-way device assembly for a start-stop motor, in which the right side of the box body abuts against the end face of the planetary shaft, and an adjustment pad and a friction-reducing pad are assembled between the left side of the box body and the right side of the clamping ring to fix the box body and the planetary shaft in the axial position. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of a one-way device assembly for a start-stop motor of the utility model;

[0026] Figure 2 This is a schematic diagram of the utility model one-way device;

[0027] Figure 3 This is a schematic diagram of the planetary shaft of the utility model;

[0028] Figure 4 This is a schematic diagram of the box body of the utility model;

[0029] Figure 5 This is a schematic diagram of the ring gear bracket of the utility model;

[0030] Figure 6 This is a schematic diagram of the reduction gear ring of the utility model;

[0031] Reference numerals:

[0032] 1. One-way device; 101. Second slot; 102. Fork block; 103. Fork slot; 104. Planet shaft hole; 2. Drive gear; 3. Planet shaft; 301. First slot; 302. Shaft body; 303. Planet gear mounting plate; 304. Planet gear mounting shaft; 4. Planetary gear; 5. Housing; 501. Annular clamping plate; 6. Ring gear bracket; 601. Annular slot; 602. Ring gear slot; 7. Reduction ring gear; 8. Clamping ring; 9. Adjusting pad; 10. Friction-reducing pad; 11. Wire clamping ring; 12. Retaining ring; 13. Buffer spring. DETAILED DESCRIPTION

[0033] 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.

[0034] Example 1

[0035] A one-way device assembly for a start-stop motor, such as Figures 1-6 As shown, it includes a one-way gear 1, a driving gear 2, a planetary shaft 3, a planetary gear 4, a housing 5, a ring gear bracket 6, a reduction ring gear 7, a clamping ring 8, an adjustment pad 9 and a friction-reducing pad 10;

[0036] The one-way device 1 is assembled on the planetary shaft 3 and can slide axially relative to the planetary shaft 3. The drive gear 2 is assembled at the front end of the one-way device 1. The planetary shaft 3 passes through the housing 5 and is equipped with a plurality of planetary gears 4 at the rear end. The ring gear bracket 6 is assembled on the housing 5. The reduction ring gear 7 is assembled on the ring gear bracket 6. The planetary gears 4 are located in the reduction ring gear 7 and mesh with the reduction ring gear 7.

[0037] A first retaining groove 301 is defined on the planetary shaft 3, into which the inner end of the retaining ring 8 fits. When the one-way clutch 1 reaches its rearward limit, the one-way clutch 1 abuts against the left side of the retaining ring 8. The right side of the housing 5 abuts against the end face of the planetary shaft 3. An adjustment washer 9 and a friction-reducing washer 10 are installed between the left side of the housing 5 and the right side of the retaining ring 8. The retaining ring 8 is an open retaining ring.

[0038] In this embodiment, the integrated reduction ring gear structure is split into a housing 5, a ring gear bracket 6, and a reduction ring gear 7. The housing 5 is used to assemble the planetary shaft 3, the ring gear bracket 6 is assembled on the housing 5, and the reduction ring gear 7 is then assembled on the ring gear bracket 6, and the reduction ring gear 7 is then engaged with the planetary gear 4; the split setting is relatively easy to process and manufacture, and can be made of different materials. For example, the ring gear bracket 6 can be made of plastic, and the housing 5 and the reduction ring gear 7 can be made of metal. Compared with the integrated structure using metal materials, the cost is relatively low.

[0039] In this embodiment, an open collar 8 engages the planetary shaft 3, defining the maximum retractable position of the one-way clutch 1. The right side of the housing 5 abuts the end face of the planetary shaft 3. Adjustment washers 9 and friction-reducing pads 10 are installed between the left side of the housing 5 and the right side of the collar 8 to secure the housing 5 and the planetary shaft 3 in their axial positions. These washers 9 and friction-reducing pads 10 also act as a force transmitter for the collar 8, transferring the force exerted on the collar 8 by the one-way clutch 1 to the housing 5. The friction-reducing pads 10 are also provided to mitigate wear caused by the rotation of the planetary shaft 3.

[0040] In actual operation, the isolator 1 and the planetary shaft 3 rotate, while the housing 5 remains stationary. Driven by the rotation of the planetary shaft 3, the retaining ring 8 rotates, driving the adjustment pad 9. The friction-reducing pad 10 is provided to mitigate wear caused by this rotation. In this embodiment, the adjustment pad 9, the friction-reducing pad 10, and the friction-reducing pad 9 are positioned in sequence between the left side of the housing 5 and the right side of the retaining ring 8. That is, the friction-reducing pad 10 is positioned between the two adjustment pads 9 to reduce wear.

[0041] like Figure 1 、 Figure 4 、 Figure 5 and Figure 6 As shown, an annular clamping plate 501 is provided in the box body 5, an annular clamping groove 601 is provided at the front end of the ring gear bracket 6, and a ring gear clamping groove 602 is provided at the rear end. The annular clamping plate 501 is assembled in the annular clamping groove 601, and the reduction ring gear 7 is assembled in the ring gear clamping groove 602.

[0042] In this embodiment, the reduction gear ring structure is unique, relatively large, and constructed from more than one material, unlike typical one-piece structures made of the same material. This embodiment utilizes a modular structure, comprising a housing 5, a ring gear bracket 6, and a reduction gear ring 7. The ring gear bracket 6 is plastic, while the reduction gear ring 7 is made of powder metallurgy. Specifically, the ring gear bracket 6 is plastic, while the reduction gear ring 7 is metal. The ring gear bracket 6 is assembled within the housing 5 by providing an annular retaining plate 501 and an annular retaining groove 601, and the reduction gear ring 7 is assembled onto the ring gear bracket 6 by providing a ring gear retaining groove 602.

[0043] The housing 5 is a multi-part riveted assembly that serves as a fixed support. It first secures the ring gear bracket 6 and secondly supports the planetary shafts 3. The ring gear bracket 6 is a plastic component. It is radially fixed to the housing 5 through a tooth-slot fit. It also mates with the reduction ring gear 7, securing it both radially and axially. The reduction ring gear 7 is fixed to the ring gear bracket 6, and the rack within its inner bore provides the path for the planetary gears 4 to rotate.

[0044] like Figure 2As shown, the front end of the one-way clutch 1 is provided with a second slot 101, and the rear end is provided with a third slot. The third slot is equipped with a shift fork block 102. A shift fork slot 103 is formed between the shift fork block 102 and the stepped surface of the one-way clutch 1. The shift fork is installed in the shift fork slot 103, and the shift fork drives the one-way clutch 1 forward or backward. When driving the one-way clutch 1 forward, the drive gear 2 rotates to start the engine and achieve ignition. Then, the one-way clutch 1 is driven backward and reset.

[0045] like Figure 2 As shown, a planet shaft hole 104 is provided in the one-way device 1, and the planet shaft 3 is assembled in the planet shaft hole 104 through a straight key, so that the planet shaft 3 drives the one-way device 1 to rotate, and the one-way device 1 can move axially on the planet shaft 3.

[0046] The one-way clutch 1 is both a fixed support and a torque transmission part. There is a driving gear 2 at the front end of the outer circle, and a spline is processed on the inner hole to cooperate with the spline of the planetary shaft 3. It can move axially on the outer circle of the planetary shaft 3. There is also a fork groove 103 on the outer circle to hold the shift fork, and a straight key is connected to the driving gear 2, so there is no radial slip.

[0047] like Figure 1 As shown, the second retaining groove 101 is fitted with a wire collar 11, which is then fitted with a retaining ring 12. Retaining ring 12 abuts against the front end face of the drive gear 2. A spring retaining groove is defined at the rear end of the drive gear 2, within which a buffer spring 13 is fitted. This buffer spring 13 abuts against the stepped surface of the one-way clutch 1. The drive gear 2 is a component that directly transmits torque to start the engine. The rear end inner hole is supported by a buffer spring 13, while the front end is secured by the retaining ring 12 and the wire collar 11, essentially positioning it axially. A straight key is located within the inner hole, connecting to the straight key at the front end of the one-way clutch 1, positioning it radially relative to the one-way clutch 1.

[0048] like Figure 3 As shown, the planetary shaft 3 comprises a shaft body 302, a planetary gear mounting plate 303, and several planetary gear mounting shafts 304. The planetary gear mounting plate 303 is located at the rear end of the shaft body 302, and several planetary gear mounting shafts 304 are mounted on the planetary gear mounting plate 303. The planetary gears 4 are mounted on the planetary gear mounting shafts 304. The planetary shaft 3 is the component that transmits torque. The planetary gear mounting shafts 304 are mounted on the rear end plane, and the planetary gears 4 are mounted on the planetary gear mounting shafts 304. The front end outer circle is designed with splines that mate with the internal splines of the one-way gear 1.

[0049] In order to better understand the present invention, the following is a complete description of the working principle of the present invention:

[0050] When the starter is running, the armature shaft teeth drive the planetary gear 4 to rotate, and under the action of the reduction ring gear 7, the planetary shaft 3 is driven to rotate, and the planetary shaft 3 drives the one-way device 1 to rotate, and then drives the drive gear 2 to rotate.

[0051] The shift fork drives the one-way clutch 1 forward, that is, the one-way clutch 1 moves forward relative to the planetary shaft 3, causing the drive gear 2 at the front end of the one-way clutch 1 to engage with the engine. The rotation of the drive gear 2 drives the engine, starting the engine and achieving ignition. After starting, the shift fork drives the one-way clutch 1 backward, and the drive gear 2 is separated from the engine and reset.

[0052] 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 one-way device assembly for a start-stop motor, characterized in that: It includes a one-way device (1), a driving gear (2), a planetary shaft (3), a planetary gear (4), a housing (5), a ring gear bracket (6), a reduction ring gear (7), a retaining ring (8), an adjustment pad (9) and a friction-reducing pad (10); The one-way device (1) is mounted on the planetary shaft (3) and can slide axially relative to the planetary shaft (3); the driving gear (2) is mounted on the front end of the one-way device (1); the planetary shaft (3) passes through the housing (5) and a plurality of planetary gears (4) are mounted on the rear end; the ring gear bracket (6) is mounted on the housing (5); the reduction ring gear (7) is mounted on the ring gear bracket (6); the planetary gears (4) are located in the reduction ring gear (7) and mesh with the reduction ring gear (7); A first clamping groove (301) is provided on the planetary shaft (3), and the inner end of the clamping ring (8) is assembled in the first clamping groove (301). When the one-way device (1) moves backward to the limit position, the one-way device (1) and the left side of the clamping ring (8) abut against each other; the right side of the box body (5) abuts against the end face of the planetary shaft (3), and the adjustment pad (9) and the friction-reducing pad (10) are assembled between the left side of the box body (5) and the right side of the clamping ring (8).

2. The one-way device assembly for a start-stop motor according to claim 1, characterized in that: An adjustment pad (9), a friction-reducing pad (10) and an adjustment pad (9) are tightly abutted between the left side of the box body (5) and the right side of the clamping ring (8) in sequence.

3. The one-way device assembly for a start-stop motor according to claim 1, characterized in that: An annular clamping plate (501) is provided in the box body (5), an annular clamping groove (601) is provided at the front end of the ring gear bracket (6), and a ring gear clamping groove (602) is provided at the rear end, the annular clamping plate (501) is assembled in the annular clamping groove (601), and the reduction ring gear (7) is assembled in the ring gear clamping groove (602).

4. The one-way device assembly for a start-stop motor according to claim 1, characterized in that: The front end of the one-way device (1) is provided with a second card slot (101), and the rear end is provided with a third card slot. A shift fork card block (102) is assembled on the third card slot, and a shift fork slot (103) is formed between the shift fork card block (102) and the stepped surface of the one-way device (1).

5. The one-way device assembly for a start-stop motor according to claim 1, characterized in that: A planet shaft hole (104) is provided in the one-way device (1), and the planet shaft (3) is assembled in the planet shaft hole (104) via a straight key.

6. The one-way device assembly for a start-stop motor according to claim 4, characterized in that: A wire clamping ring (11) is mounted on the second clamping groove (101), a retaining ring (12) is mounted on the wire clamping ring (11), and the retaining ring (12) abuts against the front end surface of the driving gear (2).

7. The one-way device assembly for a start-stop motor according to claim 1, characterized in that: A spring slot is provided at the rear end of the driving gear (2), a buffer spring (13) is installed in the spring slot, and the buffer spring (13) abuts against the stepped surface of the one-way device (1).

8. The one-way device assembly for a start-stop motor according to claim 1, characterized in that: The planetary shaft (3) comprises a shaft body (302), a planetary gear mounting disc (303) and a plurality of planetary gear mounting shafts (304); the planetary gear mounting disc (303) is located at the rear end of the shaft body (302); the plurality of planetary gear mounting shafts (304) are mounted on the planetary gear mounting disc (303); and the planetary gear (4) is mounted on the planetary gear mounting shafts (304).

9. The one-way device assembly for a start-stop motor according to claim 1, characterized in that: The clamping ring (8) is an open clamping ring.

10. The one-way device assembly for a start-stop motor according to claim 1, characterized in that: The gear ring bracket (6) is made of plastic, and the reduction gear ring (7) is made of metal.

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